Hi,
I have a dino issue also. My tank is only a 24x18x18 at around 3 years old but the rock is around 13 years old, I only have 3 fish in it so not much food going in or much fish waste. The problem I think I have is, I'm testing a phosphate of zero on salifert, even the higher double amount test and nitrates of 10, maybe a little higher.
I started to notice an issue when my digitata started to pale over the course of a few months then it slowly declined to stn and now I have removed all of the digi. My tank is now mainly lps but they don't look as plump as they used to.
I also noticed that all my snails were slowly dying/disappearing thinking it was the crabs eating them, I assume this is also down to dino.
I have decided to up my feeding to twice a day now as I'm not sure about dosing phosphates yet. Is dosing the easiest route or maybe add another fish, if I go the dosing route what would you recommend to use ? Thanks.