I was thinking a 29L for a sump. I have a spare 55g (or will when the 90 is set up), but i think that will be to big to place under my 90. When placing the baffles and things into the tank should i use that solvent or is silicone ok for that?
Also, my 90g has a built in overflow in the left corner. I am very new to the overflows since my 55 doesnt have any of that (everything is HOB).
I dont mean to hijack this thread but i feel there are very knowledgable people subscribed. What size return pump should i use for this? MAG 12?