Im not at the school often so i will have to take another pic when i get there again.
Im embarrassed to say this but there has been a alk swing within the past few months that might explain this. The tank had been up and running for over a year before we got the funds to purchase a doser. Prior to that we handled keeping up with the alk, calc, and mag through weekly water changes. But the problem was that the water changes were not enough. I do manage the tank but i can only do so much based on the time i have and with the funds the school has. I would constantly say the alk and calc has got to be super low, we need to buy test kits and start dosing by hand but it never happened. After we got the test kits and doser i found out the alk was around 6. Started dosing and brought it up to 8 over a week or so. At least a week. The school didnt see an urgency for dosing and testing because the tank was literally thriving. Everything was colorful and growing like weeds so even i thought water changes was enough. When we found out the alk was at 6, my mind was blown that any sps could even be alive. So maybe that is the cause. If it is, how do i fix it. I have a chunk of this in my tank and its beautiful, doing well. No white tips.
