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DialySeas Aquarium Dialysis Equipment

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Introduction

The DialySeas is the most advanced filtration system ever designed for aquarium use. SeaVisions has adapted technologies from the medical and electronics fields and merged them into a unique and patented design. When properly installed and configured, the DialySeas virtually eliminates the need for water maintenance on your aquarium. Not only will this system remove waste products from your water; it will also maintain proper levels of trace elements ensuring water quality conditions as close to perfect as possible.

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A powerful microprocessor has been used in the design of the custom controller that monitors the DialySeas machine and your aquarium. The DialySeas gives you, the user, control over every major operating parameter. The DialySeas is an advanced system, it is a completely new filtration approach for the aquarium industry. The dializers are actual artificial kidneys that are used every day in the medical world for hemodialysis, the treatment of the blood of persons with end-stage renal disease. The DialySeas is designed to eliminate the task of manual water changes. Dialyzed water has several advantages over merely changed water; the DialySeas incorporates a separation process rather than a dilution or concentration reduction process. The water filtered by the DialySeas returning to the aquarium has been purged of contaminants, not simply replaced or diluted. Dialyzing aquarium water is less stressful due to the fact that the inhabitants of the aquarium do not even realize that the process is occurring. The unit can exceed the normal "water change amount" to the point that biological systems can be significantly reduced in size or eliminated.

The DialySeas will permit your aquarium to support a much higher bioload per gallon than ever possible before. Large, hard to maintain aquariums become much more manageable with respect to water quality and general maintenance. Smaller aquariums no longer go through the shock of water changes since small volumes of water are changed on a frequent basis.

The DialySeas is constructed using only the highest quality components and has been designed with many failsafe features to protect you and your aquarium. SeaVisions is committed to building products in the USA with the highest standards of quality and workmanship.

System Requirements

The DialySeas was designed to remove dissolved contaminates in your aquarium water. It was not intended to remove large particles from the water so you should use adequate mechanical filtration to remove large debris. (See BioSeas, See C.A.D.S) Another aspect of a properly configured filtration system is the installation of a good protein skimmer for organic waste removal as well as adequate aeration of the water.

If you have a live reef aquarium you do not necessarily need a wet dry system as the live rock provides sufficient area for biological filtration components to thrive. If you have a fish-only system you may consider installing a small wet dry system – depending upon the amount of water you dialyze..

For the DialySeas unit itself, you will need to have access to a potable water supply, typically from a water pipe plumed close to the unit. The only other requirement is a drain for wastewater that is removed from your tank. It is recommended that you leave adequate space around the DialySeas unit to provide for proper ventilation as well as easy access for changing membranes and replacing the salt supply. 

 

Another consideration is the proximity of a telephone line so that your DialySeas machine can be accessed via a modem connection. The DialySeas can be connected to a 2400-baud modem, which allows the user remote monitoring and control of the DialySeas.

Theory of Operation

What DialySeas Does

The Marine aquarium environment is relatively well defined. The principal factors that need to be managed are pH, alkalinity, calcium hardness, ionic integrity, trace element supplement, stress, temperature, oxygen, and the avoidance of chlorine, chloramines, and excessive phosphates. Fundamental to the success of a healthy aquarium, no matter what size, is the stability of the aquarium environment. Not only does this mean maintaining pure water quality conditions, but it also means perturbing the system as little as possible.

Before DialySeas, scheduled water changes were required to remove waste products that could not be removed by mechanical, biological (aerobic or anaerobic), and chemical filtration methods. Water changes have also been required to restore the aquarium to a balanced ionic condition. Unless large amounts of water were changed at one time or very frequent smaller water changes were performed; dilution of organic waste and an improvement of the ionic conditions in the aquarium were insignificant.

The DialySeas is a patent protected product that maintains a consistent level of water integrity without having to perform these manual water changes. You save time, money, and avoid imposing constant stress on your marine inhabitants (and your carpet!). Now you can feed your fish and invertebrates what they require. Gone are the days you may have starved them in an attempt to preserve your water conditions.

DialySeas is not based on a biological filtration platform. Chemical imbalances, temperature, medication or very poor water conditions do not effect this product. In addition, it will work for you immediately since it does not require a long cycle or seasoning period to be effective. The DialySeas does not require constant attention like a denitrater or an algae scrubber to make it work. DialySeas removes ammonia, nitrite, nitrate, phosphate, medication, and almost any other pollutant that is dissolved in your water. DialySeas can and does even kill parasites.

Overview of the dialysis process

What is dialysis?

DialySeas can be compared to a dialysis machine for human blood (hemodialysis). The basic principal is founded on the fact that elements in solution will tend to flow from areas of higher concentration to areas of lower concentration. A patient's blood is pumped on one side of a semi permeable membrane and a clean dialysate solution containing elements desirable on the other side. The result is the dialyzable substances (contaminants) pass into the dialysate solution and are gradually eliminated. The patient's blood is purified and this process does not require that his blood be changed. Normally a person requires hemodialysis because a combination of any of the following exists in their blood stream: excess water, toxic waste products of metabolism such as urea and uric acid, and inorganic salts which are disposed by the kidneys in the form of urine. Kidneys are also responsible for maintaining the water balance in our bodies and the acidity (pH) of the blood.

Principals of Operation

The three main principles of dialysis are diffusion, osmosis, and hydrostatic pressure. Dialysis is a membrane transport process in which solute molecules are exchanged between two liquids. This process proceeds in response to the difference in chemical potentials between the liquids. A basic description of these principles will familiarize you with what is occurring during aquarium dialysis.

Diffusion is the movement of particles from a higher concentration to an area of lower concentration. Two liquids having different chemical concentrations of various substances are said to have a ‘chemical potential’ between them. Systems such as this naturally tend towards a point of equilibrium. In other words, the ‘system’ will try to evenly distribute chemicals so that concentrations on both sides are the same. The process does not depend on stirring or other mechanical catalysts. In aquarium dialysis, high concentrations of toxins and electrolytes in the water diffuse, or move, across a semi permeable membrane into the dialysis solution (dialysate) where the concentrations are lower.

Osmosis is the transport of a fluid through a semi permeable membrane into a solution where its concentration is lower, thus equalizing the conditions on both sides of the membrane. Water with a high pollutant concentration will naturally tend to flow to areas of low pollutant concentration. This process happens on a molecular level and involves the movement of individual pollutant molecules across the dialysis membrane into the dialysate solution.

To increase the efficiency of the osmotic model we must apply an external force to the system. In our application, hydrostatic pressure is used to expedite the process. In simple terms, added pressure on one side of our semi permeable membrane forces molecules through the membrane more rapidly due to the pressure differential on either side of the membrane. One could vision this as simply a way of pushing the molecules through the membrane, accelerating the process.

Hydrostatic pressure is exerted simply as a consequence of the weight of water in a column or container. This pressure may be positive or negative. For example: if a container has semi permeable walls, positive hydrostatic pressure inside the container would expel the fluid through the walls; conversely, if a negative hydrostatic pressure exists outside the container, the fluid would be pulled through the walls of the container. Positive and negative hydrostatic pressures are used during aquarium dialysis to remove excess water and some dissolved solutes rapidly from the aquarium water. This rapid removal of water is called ultra filtration.

 

How Aquarium Water is Treated

Keep in mind that the DialySeas is not intended to filter your water twenty-four hours a day. Small amounts of the aquarium water are moved through the DialySeas machine at regular intervals throughout the day. Contaminated aquarium water runs along one side of the semi-permeable membrane and pure, deionized RO water (technically referred to as the dialysate) runs along the other. From the previous discussion, it is clear to see that contaminants from the aquarium water will naturally tend to cross the membrane and enter the ultra-pure water on the other side. When contaminated aquarium water is pumped through the DialySeas, pressure and concentration gradients between the contaminated aquarium water and dialysate solution remove pollutants. Because the aquarium water contains toxic wastes and higher concentrations of other ionic electrolytes, these molecules diffuse across the membrane into the dialysate solution. The converse of this transfer also works; any substance that is more concentrated in the dialysate solution diffuses into the aquarium water.

If included in the dialysate solution, elements that we desire to add to the aquarium water simply flow across the membrane into the water, which is ultimately returned to the aquarium. The DialySeas makes deionized RO (reverse osmosis) water for the dialysate solution, therefore; anything that is not included in the dialysate solution (DI water) will pass from the contaminated aquarium into this dialysate solution. DI water can be 50 times purer than tap water and is equivalent to passing water through a triple distillation process. This high purity along with properly applied hydrostatic pressure creates a measurable differential between the aquarium water and the DI water thus creating a quick passage of contaminants out of the system.

Since the potential is so great across the boundary of aquarium water and pure DI water we consequently remove some of the elements that we wish to maintain in the aquarium. To account for this fact, a mixture of elements is added to the return line of the DialySeas to reconstitute the dialyzed solution. SeaVisions uses a very high grade of synthetic salt, to replenish salt and trace elements that have been removed from the dialyzed water. This addition of salt and essential trace elements to the effluent side of the DialySeas is automatically and precisely controlled to eliminate fluctuations in specific gravity and important trace elements.

The DialySeas monitors the conductivity of the aquarium water to determine when salt and other elements must be injected back into the system via the return line. Conductivity is extrapolated to a specific gravity measurement and hence can be correlated to the amount of salt in the water. As the conductivity falls below a pre-defined threshold, the DialySeas will inject salt back into the system so that the specific gravity of the aquarium is precisely controlled.

Effects of DialySeas on Aquarium Water

SeaVisions has carefully considered the many chemical properties of aquarium water. We have studied the following parameters in depth to provide you with the ultimate filtration system for your aquarium.

 

Salinity

pH

Redox or ORP

Calcium

Alkalinity

Ammonia

Nitrite

Nitrate

Phosphate

 

Trace Elements

Cost of Operation

As the DialySeas works, contaminants will be carried through the dialyzer membranes, and along with this transport will be a percentage of salt leaving the aquarium. The DialySeas will add salt to your aquarium to counteract the loss of salt through the membranes. Typically a five-gallon container of salt in conjunction with the DialySeas will effectively purify between 210 to 250 gallons of water.

Compare this system to the more traditional method of manual water changes. The same five-gallon container of salt would yield approximately 150 gallons of salt water. This results in a base cost of thirty cents per gallon. Combine this with the labor required to perform the task and making DI water, the familiar cost of thirty to fifty cents per gallon is quickly realized.

How Much Water To Dialyze

The amount that will need to be dialyzed will vary depending on bioload and aquarium size. You may generally set the DialySeas machine for whatever amount of water change that you are performing now manually to keep the aquarium free of contaminants. The advantage is that with the DialySeas machine is always connected to your aquarium and you can adjust the amount of water you process without undue shock to your inhabitants.

The DialySeas is operated by a powerful microcontroller which cycles the DialySeas unit on and off at 48 times per day. The time that it runs during that cycle period will determine the amount of water the unit will do per day. If you have the unit set to dialyze 5 gallons per day, 1/48th of that amount will be done at any one time. This is .104 gallons every 30 minutes, or 13.3 oz every 30 minutes. At this rate, 150 gallons of water would be dialyzed each month. This example clearly demonstrates the stability possible with the DialySeas – when has anyone ever stressed their aquarium community by changing the water a glass full at a time?

The DialySeas machine can dialyze up to 50 gallons per day. You would need to have an aquarium of approximately 8000 gallons for this to be necessary.

Naturally one reason for using the DialySeas machine is to remove the excessive dissolved organic material, which are inhibitors to your biological system, and inhabitants. By closely monitoring the conditions of the aquarium and the bioload it will be easy to determine the rate your aquarium requires dialyzing. The controller keeps track of how much water is dialyzed each day and each month for your convenience. This will allow you to adjust the amount of water you dialyze based on your particular situation.

 

SeaVisions of South Florida Corp

DIALYSEAS:

 

PERFORMANCE CHART

FEATURES DIALYSEAS MODEL 1 VER 6.59 MINI DIALYSEAS MODEL 2
AQUARIUM CLASSIFICATION FRESH WATER

SALT WATER

SALT WATER REEF

FRESH WATER

SALT WATER

SALT WATER REEF

DIALIZER MEMBRANES 2- MCA 180 HUMAN

Artificial Kidneys

  1. MCA 180 HUMAN

Artificial Kidney

RO-MEMBRANES 2- 50 GALLON per/day 1-75 GALLON

per/day

DEIONIZER FILTER STANDARD STANDARD
CARBON FILTER STANDARD STANDARD
1 MICRON FILTER STANDARD STANDARD
PRE FILTER FOR DIALIZER MEMBRANES STANDARD NO (OPTIONAL)
MEMBRANE DIFFERENTIAL PRESSURE GAUGE STANDARD STANDARD
OPERATING VOLTAGE 110 VOLTS 60 Hz 110 VOLTS 60 Hz
COMPUTER CONTROLLED STANDARD NO
CONDUCTIVITY

CONTROL IN Ms

STANDARD NO
FLOAT SWITCH CONTROL HIGH LOW AUX LOW
SALT INFUSION SYSTEM STANDARD NO
CALCIUM DOSER ADD A SPECIFIC AMOUNT OF CALCIUM OR ANY CHEMICAL IN 0.00 GPD.

CALCIUM MIXER

OPTIONAL

PART # 15-003

PART # 20-002

NO
ORP MEASURING OPTIONAL

PART # 04-0003

PART # OR101435

NO
PH MEASURING OPTIONAL

PART # 04-0003

PART # PH201435

NO
CONDUCTIVITY MEASURING STANDARD NO
TEMPERATURE MEASUREMENT WATER TEMP & COMPUTER BOARD TEMP NO
AUTO FILL (EVAPORATION MAKE UP WATER) STANDARD DISPLAYS PRECISE AMOUNT PER DAY/ PER MONTH STANDARD
DIALIZED WATER RATE CONTROL STANDARD USER ADJUSTABLE IN 0.00 GPD ACCURACY TIMER ADJUSTABLE
LEAK DETECTOR STANDARD NO
ALARM CONDITION ALERTS STANDARD NO
WATER PRESSURE REQUIREMENTS 60 PSI 60 PSI
DRAIN FOR WASTE GRAVITY OR PUMP GRAVITY OR PUMP
PERISTALTIC PUMPS (2) 1 FOR PUMPING AQUARIUM WATER THROUGH MEMBRANES AND ONE FOR ADDING SALT BACK TO AQUARIUM 1 FOR PUMPING AQUARIUM WATER THROUGH THE DIALIZER MEMBRANES
SALT MIXER STANDARD NO
CALCIUM MIXER OPTIONAL

PART # 15-003

PART # 20-002

NO
LCD DISPLAY STANDARD NO
LED DISPLAY STANDARD NO
MEMBRANE KEY PAD STANDARD NO
DI. AUTO FILL RATE 100 GPD @ 60 PSI 75 GPD@ 60 PSI
DIALYSIS RATE 2.66 GPH or 63.84 GPD MAX IF UNIT RAN CONTINUOUSLY NOT RECOMMENDED .83 GPH OR 20 GPD MAX
TYPICAL RECOMMENDED DIALYSIS RATE 1 to 25 GPD .5 to 10 GPD
AQUARIUM CAPACITY UP TO 2000 GALLONS UP TO 300 GALLONS
SALT CONSUMPTION PER GALLON OF WATER DIALYIZED 30 TO 40% 30 TO 40%
DIMENSIONS 24" LONG 24" HIGH 14" DEEP 18" LONG 20" TALL 8" DEEP
REMOTE MONITORING AND CONTROL VIA MODEM OPTIONAL

PART # 87-04

10-0001

87-0005

NO