okay that sounds good. i know nothing about crushed coral. how much do i need? how do i know when i need to replace it if i even have to? will adding a little increase the ph and adding alot of it increase it alot??? or the amount doesnt matter?^^^ with moguroko
If your tap is reading 6.5 and in the tank at 7.5 you'll be fine. I've seen where ph can just all of a sudden drop so adding crushed coral is a very good idea IMO. I would make azure it stays up then take any chances of it dropping