I have a fluval evo13.5 at the moment. I purchased the intank 1 and 2 chamber mods. Also I blocked the hole for better filtration. For some reason the water levels are really low. I woke up in the morning and the heater was off because there was no water in the chamber with the return pump. Can anyone please if they have this tank maybe give some info on proper way to have everything setup with the new mods.
