Thank you guys! This is latest parameter, dosed 1 cube of mysis and bac to my tank last night, ammonia spiked to 0.25ppm from 0.00ppm, but surprisingly the nitrate dropped to 2.5ppm from 10.0ppm, any otai's know why like that? Also the calcium spiked. Take a look Also the some heavy diatom blooms. Thank you happy reefing! Sent from Singapore Reef Club mobile app