could be too much par?

[ink]

Hello,
I have a 1200 liters system, with 18x54w T5 tubes. Using all ati tubes, 9 actinic, 2 purple plus and 7 aquablue spezial, PPFD reading with an apogee sensor set on sun mode, peaks to 290 umoles/s/m2 on the most illumineted coral.

Using 12 tubes all aquablue spezial, ppfd peaks to 380umoles.

I guess in the first tube mix there should be more PUR, but I'm also afraid there could be a larger part not detected by sensor and I'm afraid it could damage corals (mostly acros). What do You think? any body using a similar mix with mostly actinic tubes (not blueplus)?

Thanks.

Luca

 

[LARedstickreefer]

380par isn’t too much for Acroporas, it’s actually just right, but you’ll need to acclimate anything that goes in there if it came from a lower par system, or if it’s a Montipora.

Plenty can grow just fine around 250, so I’d check with your source before you stick them in. I’ve never bleached a coral that came from a higher par system, but have when I took one from a lower par.

Edit: You’ll need to check your par meter to see how it was calibrated. It should list a correction factor for you.