What kind of corals are you not seeing growth on? SPS, LPS or Softies?
I am still relatively new to SPS (1 Year), but I do not think a 4 bulb T5 is really enough light for good SPS growth. (I am sure there are some who do it well with 4 bulbs but would not know what vodoo the use to get it to happen) I have the 6 bulb NEP and think it will be marginal for SPS at best. I just added 3 SPS pieces within the past few weeks so time will tell on that.
I still debate going metal halide to really kick the growth up. Fortunately lack of funding is causing me to wait and see, which I should do anyhow. Once the SPS frags have had a good 6 months I will look at major changes as needed.
Coraline growth certainly looks good, but I am not sure there is any real correlation to be made directly to SPS growth.
You mentioned good Alk and Ca levels. What are those exact numbers?
Really, you don't think my 24" ATI fixture that was very expensive is good enough for SPS growth? I bet the guys at ATI would beg to differ, but at this point I'm not disagreeing with you, I obviously can't grow any...and the fact I'm new to SPS and don't know a lot about them. MH was avoided for me due to heating issues, I didn't see the point of buying a nice MH light and then adding another $200+ for a chiller to keep the tank cool, when I could get a nice T5 light for the same amount of money.
I purchased the ATI and ATI bulbs for the very reason of good PAR, I think, unless my bulbs are just old or something, the lighting is very good. Its very bright and lights up the house and street from the little room its in. Pretty sure that I'm good there, nothing glaringly wrong anyway.
I will post all my test kit levels this weekend, I don't remember what they were last weekend when I tested, but they were all in the normal ranges.
Thanks.
I do a 15% water change with reverse osmosis water every week and all params are stable. SG 1.022
Isn't that a bit low for SG?
Well, interesting info on the starphire. I've been searching for a Solana and have been trying to hold out for the low iron version, but there is one for sale now with "regular" glass. Maybe this is good I ran across this info now.
It is a little lower than I would like, but thing are still doing well. The pump that I had on my ATO was too powerfull and kept adding more water than it was supposed to before the pump could shut off. I am slowly raising SG with my weekly water changes. I should have it up to around 1.025 soon.