I've been real busy lately, but finally have time to post an update. I stopped using the Prodibio stuff from 4/29 through 7/4, and have noticed a measurable amount of Nitrates for the first time ever. There are no noticable negative effects to the tank due to this barely measurable amount, but I still prefer seeing a reading of zero.
I have never had a measurable amount of nitrates in this tank until today. When I stopped using the Prodibio products, I also removed my chaeto, so I'm not sure which one was consuming the Nitrates. I resumed Prodibio dosing today, and will monitor my nitrates for the next couple of months to see if they go back to being unmeasurable.
As far as the Phosphates are concerned, I have a reading between 0 and .024 mg/l using the Deltec/Merck kit. People on this board are obviously misquoting their Phosphate levels when they claim to have less than .01 mg/l since this kit 's smallest measurable amount is .024. I also had another sample tested at the same time at the lab and had a reading of .040 ppm, so there is obviously a disrepancy.
Phospate levels did not change any at all from the chaeto removal or the stoppage of Prodibio.
Growth is still good, and color is still kind of bland. Growth rate and color do not seem to have changed any during the last two months without Prodibio. I will post some updated pics next month at the six month old interval. Since my tank is starting to mature, and everything has been going well, I'm going to introduce some more corals very soon. I may try some LPS corals, even though I think my flow will be too strong for most of them. I will also be buying some more SPS frags, and a nice wrasse of some sort.