water change and ATO

corbosman

New member
Hi all, im designing the setup of my first SW tank. Below is a sketchup showing my current ideas. The DT is a 225 gallon room divider setup with overflow on the left, give or take 78x32x28. My home office is on this side of the tank, the kitchen/house on the other side. Sump will probably be a dreambox, adding about 75G.

The 4 tanks on the left are:

left top: coral quarantine (30G)
left bottom: fish quarantine (45G)
right top: RO/DI reservoir (70G)
right bottom: salt water mixing/reservoir (70G)

Im thinking of using tanks because here in Europe I cant easily find containers that would fit in such a setup. My space is limited.

Im planning on doing both ATO and continuous water changes. To mix new salt water I would open a valve that would gravity feed water into the bottom SW tank. There a pump would circulate the water regularly. Im thinking of using a litermeter to do the continuous water change, if I can get it here. Change maybe 5-10 liters a day.

Im not yet sure how I should approach ATO. Im thinking of hooking up my RO/DI to the reservoir using float switches, probably redundant ones and the container will also have an overflow to the drain in case the RO/DI keeps creating water.

Im thinking of using an osmolator to do the actual ATO. But since the reservoir is so high, im a little nervous about siphons. I dont really have space lower to the ground (the space below the tanks is in use). And the sump will also have an overflow to the drain. I know this wont save my tank, but it'll save my floor.

Anything I should change in this setup? I know I could create a much smaller ato reservoir, but I really want to make things very low maintenance. And I guess it doesnt matter what size the reservoir is if I want to create RO/DI water automatically. Should I use a solonoid for water changes instead of the osmolator? Or maybe both? Use the osmolater primarily, but have a fallback high water switch that closes a solonoid? Or have a small section in the sump for ATO and run the osmolator from there, and feed that section from the large reservoir. So many options.

 
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