Hey mempho
tough question on the age of the tank.
I got the entire contents from a guy that had it set up for some time, more than a year, cant be more specifc than that. We did the entire move with everything packed nicely in his tank water and then acclimated all of it to mine. I dont know how old this particualr frag is.
All of my parameters are good, using a 48in 8 bulb t5 ho setup 4 10000k and 4 actinics. tatal of about 432watts on a 55gal tank
Only thing I can think of is he might have been to high in the tank.
Thanks