I have lost an elegance and currently my duncans, trach, platygyra, and chalice are losing their flesh slowly. 2 x 48" ecoxotic leds. 1.023 refract 430 calcium dkh 10.5 nitrates/trites 0. Moved to a 150 g from a 75g 6 months ago. Never had had a problem with my 75g. I dosed my 75g calc/dkh daily to maintain ideal water parameters. I thought i outgrew the 75g and moved to the 150g. In the 150g i don't dose because the parameters are ok according to what ive read. I switched to led when i went to my 150g because its 30" deep. Ive tried just about everything that has been suggested to me. the only thing left is to dim my leds to almost nothing. I appreciate any help.......