Linking two tanks together?
I was interested in trying to link my 20 and 5.5 gallon together. I have the 20 gallon setup and have an empty 5.5 gallon. I was wondering if I could build an overflow for the 20 gallon and set the 5.5 as a sort of sump. Only thing is I wouldn't be using it as a filter. I would like to put nano fish or shrimp in it. Just wondering if anyone has done this. I could plant both heavily. I'm trying to save on electricity. I have noticed a serious increase in my electric bill since I came down with MTS. I have a 55 gallon Mbuna tank, 29 gallon shell dweller tank, a planted 20 long with rams and tetras, a 20 high that is empty but cycling, a 10 gallon planted dwarf puffer tank, and the empty 5.5. The 5.5 will fit right on a self below the 20 high and I would love to link them together. The plan is to have all the equipment besides the return pump obviously in the 20. The filter is a sun sun 302 canister so it is plenty capable of filtering 5 extra gallons of water and the heater is easily capable of handling 25 total gallons of water. Is this possible? Anyone out there do this. I've done lots of searching and can't seem to find anything about this, besides the normal sump filter setup. I really don't need extra filtration, I'm just looking to link two tanks together to save energy. Sorry this is so long winded. I was just researching sumps, because I'm not really familiar with them, and this idea came to me. It looks as all I would need would be a small return pump, some PVC pipe, tubing, and PVC glue. Just wondering if this could work and if anyone could recommend a small return pump for the 5.5 that wouldn't take up the whole tank.