Undergravel filters

#1
Im new to this as a hobby and I have a 60 gallon with two undergravel filters a bubble wand and a powerhead. I do frequent gravel vacuuming like twice a week and my fish seem to be doing good.I have a pleco, 3 gouramis that are blue,gold,and a blue tiger colred some tetras and 2 chinese algae eaters and 1 tiger barb. I also have a topfin heater and a red claw crab, 2 mystery snails gold, and a ramshorn snail. Does anyone have any advice for me *SICK*
 

Attachments