30" tank with 8 bulb nova extreme

[BaaMNYC]

I been having problems with my acans and favias and chalices. I was told very little par reaches the bottom but everything on the sandbed is bleaching. Could it be the bulb configuration? Or duration?

Bulb setup:
2x ati aquablue special
3x ati blue plus
2x ati purple plus
1x geissman red

Duration:
2 x blue plus & 2 purple for 9 hours
2 aquablue special, 1 blue plus, 1 red for 7 hours

Favias completely bleached.
Acans sunken in and bleached even under a frag rack its starting to look a little better. I'm not sure

Half my chalices are bleaching a little. The other half are fine partially shaded under LR.

Should I get rid of all my aquablue specials? Maybe shorten the time to 6 hours?

P.S. I have sps up top 6" from water line and they are all doing great. Growing nicely.

Levels are all inline

Ammonia, nitrite 0, nitrate phosphate almost 0.
Calcium 400
Alk 8 or 9
Ph 8.0 to 8.2

 

[JonnyJ]

Are you dosing or maintaining with water changes?

If dosing? How much and when? Manually?


What's the dims of tank? And how high is the light mounted?

 

[BaaMNYC]

tank is 110 tall, 48 x 18x 30"H. The light is on brackets about 4 to 6 inches from the water line.
im dosing alk and calcium manually recently because the demand has been going up.
I dose at night and half of the recommended dosage for the amount of gallons until i reach the desired levels.

I water change 15 gallons (10% including sump approx) every week.

 

[TRIGGERMAN]

The problem isn't your light that light is perfect for that tank. It's something with your water.

 

[BaaMNYC]

The problem isn't your light that light is perfect for that tank. It's something with your water.

How did you come to that conclusion though triggerman?

 

[TRIGGERMAN]

Because at 30" it wouldn't be bleaching them. You have my # dude call me if you want and I can ask you a few questions which will help determine if it has anything to do with your light,.

 

[BaaMNYC]

I'm keeping a closer eye on params but the lights definitely bleaching because Whwn I moved the chalice the color came back

 

[james1990]

Any updates on the bleaching?

 

[BaaMNYC]

Started dosing and the acans are doing much better. Chalice still bleaches when I put new ones in unless I put it under the shade and slowly bring it out of the shade.

I also lowered the amount of time with all 8 bulbs down to 6 hours and changed the bulb and configuration. No more aquablue specials. I use coral plus now.

 

[james1990]

I'm going to follow you on the coral plus when I switch to the 8bulb ATI