I run a 55g planted tank with two T5 bulbs, pressurized CO2
, Turface substrate and a Cascade 1200 filter. The fish are small community tetras mostly. Nothing more complicated than a few zerbra loaches.
The 55 tank is old and the silicone is started to chip and wear away. Some algae is growing on it at parts and I'm afraid to clean it off for fear of removing more Silicone. I've wanted to move to a 75 gallon tank anyway so here's my chance!
Should I move to a bigger filter? Cannisters are probably the only option since I don't want surface disruption. The Cascade 1200 works great in the 55g but is a little noisy.
I'll be running low on the Turface substrate. Are there any substitutes I could mix in with it to help fill up the 75? Possibly some small pea gravel? Has anyone tried this before?
Will my 48 inch T5 lights be enough for the 75g? I play on buying a fixture with 4 T5's in the future, but would like to squeak by with my current lighting for a little longer.
Are there any other concerns I'm missing?