Pictures are at the bottom will help with the context
so yesterday morning all my coral were doing fine i was letting the week ride without dosing to see how much Calcium and Alk my tank would use. I tested my alk at around 2 Pm and it was low at 6.8 Dkh all my other parameters were pretty much perfect. All Frags doing well when i left for work at 3. I get home from work at around 9 oclock and all my corals were significantly closed up and irritated so i checked all parameters and my alk had dropped to 6.4 all my other parameters were good tho. phosphate .04,calcium 406, Ph 8.2,salinity 1.026,ammonia,0 nitrite 0 nitrate(small amount detected.) Once i realized this i started to dose a little part b the alk part of the two little fishies 2 part. it seemed to have made all the coral a little happier. i added 10ml trying to bring the alk up to somewhere in the mid 7 range i added the two part, part b from around 945-1230 so I didn't screw my ph to much. One thing i noticed were these white spots of dying diatoms on the glass i dont know if its from just the fact im beating them or if the low ALK had anything to do with it. but I'm wondering if the diatom die off has anything to do with the angry coral. The next day i decided to do about a 3 gallon water change(the tank is a 20g tank) and then i waited about a hour and a half and tested my Params. this was what they were Calcium 460ppm Alk 7.8 Phos .03 Ph 8.2 Salinity 1.026. The most puzzling thing about this is that i have a aussie lord that looks the best he ever has yet other coral look irritated and the hammer and frogspawn are angry. the aussie lord was angry when the alk was really low but after i brought it up it opened up as full as it could. So did the low alk contribute to the diatom die off is that in turn ticking off coral. could i possibly have to strong or long of a light schedule (that's a whole other thread even though i haven't had any problems since i put the coral in the tank) and in general what the heck is going on.
so yesterday morning all my coral were doing fine i was letting the week ride without dosing to see how much Calcium and Alk my tank would use. I tested my alk at around 2 Pm and it was low at 6.8 Dkh all my other parameters were pretty much perfect. All Frags doing well when i left for work at 3. I get home from work at around 9 oclock and all my corals were significantly closed up and irritated so i checked all parameters and my alk had dropped to 6.4 all my other parameters were good tho. phosphate .04,calcium 406, Ph 8.2,salinity 1.026,ammonia,0 nitrite 0 nitrate(small amount detected.) Once i realized this i started to dose a little part b the alk part of the two little fishies 2 part. it seemed to have made all the coral a little happier. i added 10ml trying to bring the alk up to somewhere in the mid 7 range i added the two part, part b from around 945-1230 so I didn't screw my ph to much. One thing i noticed were these white spots of dying diatoms on the glass i dont know if its from just the fact im beating them or if the low ALK had anything to do with it. but I'm wondering if the diatom die off has anything to do with the angry coral. The next day i decided to do about a 3 gallon water change(the tank is a 20g tank) and then i waited about a hour and a half and tested my Params. this was what they were Calcium 460ppm Alk 7.8 Phos .03 Ph 8.2 Salinity 1.026. The most puzzling thing about this is that i have a aussie lord that looks the best he ever has yet other coral look irritated and the hammer and frogspawn are angry. the aussie lord was angry when the alk was really low but after i brought it up it opened up as full as it could. So did the low alk contribute to the diatom die off is that in turn ticking off coral. could i possibly have to strong or long of a light schedule (that's a whole other thread even though i haven't had any problems since i put the coral in the tank) and in general what the heck is going on.
