I've read that when you add additional rocks to an already cycled tank that it might trigger another ammonia spike. This is because there is not yet enough nitrifying bacteria in your already cycled tank to convert the ammonia brought about by the new rocks. I've used the additive cycle to supposedly help the spike, but not sure if it has worked... all i know is when i test my waters, I've never registered any ammonia on my tests. It could be working, or I could just be lucky.
65 Gal Marine
60lbs of LS
and 100lbs of LR
EHEIM 2215 Canister Filter, AquaC Remora Protein Skimmer w preskim box, 36" PFO Lights with 2x 250W 10K MH
and 2x96W T3 Actinics, JBJ Arctica Chiller 1/10 hp w/ Eheim 1250 Pump, Turbo-Twist 3x UV
Sterilizer 9W, (1) Yellow Tang
(1)Potter's Angel, (2) Skunk Cleaner Shrimps,(1) Eibli's Angel, (26) Turbo Snails,(10) Nassarius Snails, (2) Sand sifting starfish
(1) Regal "hippo" Tang, (20) Hermit Crabs, (1) Coral Beauty, (1) Pygmy Angel, (1) Serpent Star, (1) Brittle Star, Pumping Xenia, Finger Leather, Yellow Polyps, Green Star Polyps, Colt Leather, Mushrooms, (2) Maxijet 600 PH
and (2) Maxijet 1200 PH
Am I Overstocked Yet?