GFO and SPS

[Maverick00]

Hey guys, well i recently switched over from biopellets to GFO (had more success with GFO) after rising phosphate levels that reached 0.06ppm. I refilled the TLF reactor with GFO and let'r fly. A few days later i noticed my birdsnet colony (that i almost lost as a frag months ago) had some RTN. I looked at the two frags i made from the same colony and same thing, going white and dying from the inside out? I did several w/c thinking that might help but im wondering if ive stripped the water column so suddenly of phosphate ive 'shocked' these guys? Anyone have any similar experiences? Im sure the cause of why this happened is connected since the colony and two frags all went up at the same time in different areas of the tank.