My tank has 200gl, illuminated by T5 and Hydras !!! It's been 20 months cultivating corals with redsea's ULNS recipe in all its length and with dosages adjusted to the amount of acropores !!! I use skimmer, ozone and UV. Very happy with the result of this ULNS recipe !!!WOW! Talk about inspiration! Can you possibly share some details on your tank? Size, lighting, filtration, husbandry practices?