I have an 8x2x2 tank (gallons???) I know - lush!!! I have 4 x dwarf gouramis 20 x neons 1 x red-tailed shark 1 x albino shark 2 x knifefish 2 x sailfin mollies 4 x mollys 4x swordtails 1 x eel 2 x common plecos 2 x small suckas 6 x gold barbs 4 x cherry barbs 4 x red/black betas about 15 guppies I have just tested my water using my API tropical test kit and the readings were great 0 nitrate 0 nitrite 0 amonia 8.0 PH (0.2 higher than last wk) my Albino Shark is swimming upsidedown - I have been advised to fast it for several days then feed it mashed-shelled peas. Hopefully this will do the trick... Also... My gouramis look depressed - they have no apparent physical deformaties but all 4 have been hiding in crevaces at the top of the tank. They have not been playing - not really eating - they look depressed hiding in the back wall and have been for several days now. any suggestions? we added 2 swordtails last week?? but everything else is the same and has been for about 3 months. my bubble machines broke last week and have not yet been replaced - could that be it??? Any ideas... any help would be greatly appreciated... Thankyou Rosie!!!