thanks guys, i think its my lights, as with my sytem there built into the hood which is close to the water, and is giving of heat i have 2 heaters in the tank but, i have turned them off, its currectly sitting at 27 degrees celcius i have turned both the heaters off, also powerhead could be giving off a little heat, i got my water tested after 2 weeeks cycling and have now added to captivity bread clowns, which seem to be pottering along fine, i feel bad not having an anenonme for them to host but i have been advised not to add any coral life as of yet,