toehead11183;1063110; said:i use saltwater sands in my lake tang tank. i remove/replace only 25% of my water at a time. i recently did a 90% WC because my tank was leaning. i replaced the water very slowly to let the fish adjust to the slight difference. no one was lost
but they werent tropheus! i am gonna ahve to do a lil experiment and see how much of a pH swing happens with a 25% water change!