Using one Ro/DI to run two auto top offs simultaneously??

[locito277]

Hi all, Im in the process of setting up 2 aquariums. I purchased a BRS 150 GPD 6 stage system for auto topoff and water changes. I wanted to know if I can set it up to produce topoff water for both at the same time with independent ATO equipment on each aquarium. Any suggestions? Thanks

 

[vhuang168]

You want to setup the RO/DI to auto top off on 2 tanks and make water for wc?

You can put a 3 way splitter on the output line and have solenoids controlled by ATOs on the 2 tanks and a manual ball valve or a float valve on the line for the wc.

But having your RO/DI cycling on and off making small amounts of water is not good for your RO/DI. It will shorten the life of your membrane.


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[locito277]

Thanks Vincent can I set it up in a way where it ATO the two tanks and drops the rest in a reservoir holding tank? With 2 big tanks doing manual top of will take up too much time for me. The membranes are replaceable right?

 

[James77]

I would strongly recommend having a separate ATO reservoir, and feed the top off from both tanks from that. Connecting an RODI directly to any tank is asking for a mess, if anything goes wrong there is an endless supply of water :eek2:

I use a 20 gallon Brute to hold my ATO water. If something goes wrong, at least the overflow is limited to 20 gallons.

Yes, membranes are replaceable...about $35-$50 on most sites. The prefilters as well, range from $3 to $20 or so depending on how fancy they are.

 

[locito277]

The Reservoir option is nearly impossible due to the fact that I am setting up the 720 as a Island of sorts. I can perhaps route it that way for the 240 as it will be closer than the reservoir. The 720 is on the opposite side of the house. Maybe I am better off using two separate units.

 

[n2585722]

I am with Jim on this. Use a reservoir from the auto top off. I have a 10 gallon reservoir for top off. It is automatically refilled by the RODI when it gets low. I have a low level float switch, a full float switch and a float valve incase the full switch fails for some reason. The switches are connected to my controller wich will turn on a solenoid to turn the water supply on to the RODI. When it fills to the full switch it turns the solenoid off. RODI systems will not make good RO water in short burst. This will cause you to deplete your DI resin quickly. The RODI works better when making gallons of water instead water in small amounts. All you need is a peristaltic pump for each tank for top off.

 

[n2585722]

The Reservoir option is nearly impossible due to the fact that I am setting up the 720 as a Island of sorts. I can perhaps route it that way for the 240 as it will be closer than the reservoir. The 720 is on the opposite side of the house. Maybe I am better off using two separate units.

My reservoir is in the garage which is 35ft from the tank. I ran 1/4 tubing fron the grage through the attic and down the wall through a wall plate to the tank. The tubing was ran through PVC conduit. I fact I have 5 tubes running between the garage and the tank. I also do auto water changes from the garage.

 

[locito277]

I guess I can look for a small reservoir under the tank by the sump? Gotta see what I can fit in there. Who makes a good float valve? Thanks BTW

 

[locito277]

I wanted to add a kalk stirrer to the end of the top off. Space is semi limited. Maybe Im just not good at placement and organization LOL

 

[n2585722]

Bulk Reef Supply sells float valves for RODI. Make sure your RODI has a auto shutoff valve on it. If not they sell those also. I would not rely on just a float valve for shut off. That is why I have both on my system. There is also a leak detector on the floor in the garage by the reservoir just incase.

 

[locito277]

I was thinking of adding the tunze ato on both for safety? Any opinions on there product? I will be adding a Apex WiFi as well on the larger system but not the 240. I can run through the attic to the 240 with no problem but where the 720 will be there is a vaulted ceiling. The thinner line that comes out of the RODI I can hide but dont know how I would hide the thicker line. :-( Im not overly handy either LOL

 

[n2585722]

I am not familar with those ATO's I use a controller but it is not an Apex. The Apex should be able to do that though. It should also be able to handle both tanks. The 1/4" line I used is the same as what is normally used on RODI systems. 1/4" outer diameter 1/8" inner diameter.

 

[locito277]

The Apex can run multiple aquariums? I think I would need two units for monitoring Cacium, PH etc.

 

[n2585722]

I can do it with the controller I have so I am sure the Apex will do it also. You just have to have the correct modules and a buss cable between the two tanks. I would think all you would need is another module with temp and pH ports and the power bars for the other tank.

 

[locito277]

I'll definitely look into that. For the $$ if that was not possible I was thinking the apex for the large and maybe an older one for the 240


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[vhuang168]

Depending on how close the 2 tanks are, definitely possible.

Apex doesn't monitor Calcium. No controller I know of does.


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[locito277]

I was referring to ph. Didn't mean calcium tanks are kind of far from each other. I was wondering what you thought of the oceans motions 4 way as I was thinking of setting up a closed loop system.


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