Okay, updates!
The ferts made the plants go 'boom'
Well, filters/heaters were moved around, now everyone has one.
I'm making a background for my 5.5g that will hide the filter and heater. It's being made out of styrofoam, and is going to be held together with silicone.
(Sorry for the bad pictures, our digital camera is really old, and zoom and focus are all out of whack. That and basement is 'dark' according to the camera

)
Those pieces will eventfully be put together to make a 3-D craved background, where the filter and heater can hide
That is 'driftwood', and used to be the piece in the lower right corner of the above picture. The five small pieces that are in a row will be 'rocks'
It’s will be painted, with safe paints, so I don’t have a pick background:P