Hmmm That could explain a few things :neutral:

For how long you have BioPellets? I have same problem Illumina, BioPellets with pale SPS colors. Reading through forums I've got a feeling it can be due to BioPellets combined with intense light from Illumina. Do you have UV module? I was advised do not go more than 20% for UV module. After 3 months I have removed BioPellets from system. Have few days - no improvements yet :) so cannot confirm

i've been running pellets for a year. i'm going to lower my ca and alk, increase light a bit, and watch and wait.

ok. keep us posted as I am dealing with same issue and very curious to know the outcome. Thx

One thought I'd like to put out there, if you're running biopellets then mostlikely it's a low nutrient system. Most of my friends including me run alk at 7-8 with BP.

Another thing when buying and keeping sps, frags will brown out from transfer to a new system. Depending on the sps some more than others, my Red planet didn't lose colour after putting it in my tank, my blue milli went green and now starting to colour up. I have about 30 new sps frags and while some have coloured up some have coloured down. I wouldn't worry about your new frags as it could take a month for them to get use to your system. Pale sps means you can feed abit more but watch them close, if they're all turning darker then back off the feeding.

I feed 3-5 times a week and very sparingly and found that its a good balance, all sps is growing fast and colours are good. If a coral came from a t5 tank to led be very carefull as you could bleach it under led, lots of people under estimate the power of led including myself and have learned the hard way. I now use t5 so it's deffinately less intense than led but loving the sps colours.

+1 to everything suggested so far..

let me know if you want to sell me your biopellets.

Out of curiosity, why drop alk? Isn't alk supposed to be around that number? My alk is at 10 and I have always kept it at 10.

I completely agree on dropping Ca to around 400 or a bit higher.

Please correct me if I am wrong.

When you run a probiotic system like Biopellets it is recommend to keep your alk lower, around 7-8 is ideal. Of course, you can run alk higher if you want, but again, that is typically not recommended.

Zactly!

But for non probiotic system, then 9 or 10 is perfectly fine, correct?
That explains the confusion.