here is the story so far:
I have some tanks already set up and (to some peoples dislike ) have kept aquiring new tanks.
I want to somehow join them all together using a sump system so I dont have to keep buying new filters and heaters every time I get a new tank.
The tanks are all different sizes (15gal-1gal) and are set up at different heights on the rack.
I tried setting it up so the water syphons down from the top tank the the next one and so-on until it reaches the ground where there is a sump and a submersible pump pumps it back the the top tank.
BUT I found it too difficult to get the flow rates of the different syphons and pump the same and one tank would overfill or dry up and it was very painful to do.
has anyone got any ideas??
Filteration is not really the issuse as box/sponge filters are easy to make and cheap to buy. it is the heating that is the problem as I cant heat the whole room.