Originally Posted by cody57
i just performed a water quality test. salt= 1.020 amonia= 0.0 ph= 7.8 nitrite= 0.0 nitrate= 100 (wow) temp= aprox. 77 (power heads keep blowing thermometer off suction cup. ambient temp in room is 75, so w/lighting, water temp may be around 77) i did some major remodelling in this room, so to be honest, i couldnt get to the tank for anything but feeding for awhile. enough excuses, i did a 20-25% water change about 5 weeks ago and changed the sponges and carbon in the fluvala and another 20-25% water change last tuesday. i'll put some ph fixer in to balance ph. whats the safe frequency of water changes i can do, since thats the only way i know of to bring down the nitrates. is anything else i can do in the mean time? also, while looking for the therm., i noticed hippo now has a red mark above one of her gills. thats new. thanks for your help.
ok, well your salinity is kind of low. Do you have inverts? Ph is way low, Nitrate is past the stress level point! Tangs are sensitive creatures and need optimal water quality. He is fading because he is stressed out. Water changes are the only way to reduce the nitrates and get your fish happy again. In the meantime, make sure their diet is varied and nutritious and make sure your fish get vitamines to help boost their immune system. Start doing water changes ASAP!!!! Water changes should be done in direct correlation to nitrate levels. There is no set, fixed, time to do water changes. When your nitrates reach 20 for fish or 10 for corals, it is time for a water change.