top off

[clint0310]

could anyone help me with design for auto top off
searched though forum with no luck yet


thank you clint

[Reefland]

It is going to require a float switch and either a large resevior or your RO/DI unit hooked directly to it. Are these possible for you?

[clint0310]

I have a ro and can get a float switch can i use some sort of bottle or bucket for the top off water


found some folks talking about one in forum but would like diff kind if poss thank you

[charles6299]

i use a 25 gallon container hooked up to a float switch in my sump....my ro unit goes to this top container w/ another float switch...it uses gravity to feed sump on the other side....you can modify to fit your own needs..good luck

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[Precision Reef]

What does your setup look like? What type are you looking for?
Here is mine on my 90 Gal.

[BubbaWPB]

I found this page, which also has a DIY tab... they have kits and give lots of explanations. http://www.aquahub.com/store/autotopoffcomp.html

[clint0310]

thank you for all your input and ideas you helped me out once again.
have a super Easter

[Frogfish]

This is the auto top off I use...



This is a pretty simple and easy DIY auto top off that can be modified to fit many situations.

I have my RO/DI system in the basement. Instead of buying a couple of hundred dollar pump to fill the sumps I am running it directly off the RO unit.

I put a tee on the good water discharge from my RO/DI. One end I ran to my storage bucket. The other goes up through the floor to the back of the tank stand.

The tubing runs through a ball valve, the solenoid valve, from McMaster Carr p/n 7877K53, and to a float valve in the sump. The solenoid is powered by a digital timer. Then both the timer and float are are on water will fill the sump.

I have it set up so that twice a day for 30 minutes the solenoid is energized. For me that is plenty to keep the sump filled. And if something were to fail, it would only operate for 1 hour a day (4 gallons of top off max) which my sump can easily handle the extra volume.

Cost
Float - $15
Solenoid - $18
Timer - $10
Tubing and misc fittings $10