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06/23/2015, 01:13 PM
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#1 |
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Registered Member
Join Date: Dec 2013
Posts: 151
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Hydra 52 and T5's to much light?
Hey my last LED a reef radiance dm155e died on my. I ran that at 100% blues and 60% whites. It was supplemented with 4 t5's. I have 2X Blue Plus 1 Purple plus and 1 Coral Plus. My tank is a 24X24 SPS dominant.
Since my LED died I have purchased a Hydra 52. However its funny a few of my reef raft acros (Banana Split, SSC, Wolverine) look really bleached where less light dependent corals such as my FF Digi and Green Plating Monti are bright and showing full polyp extension at roughly the same height. I have the current settings on my Hydra 52: Red 50% Green 60% Blue 100% Royal Blue 100% Dark Blue 100% Violet 65% UV 50% Cool White 60% I have them on a 3 hour ramp up and ramp down and currently maxing at 65% power for 6 hours. During the 6 hours of full power (65%) the t5's turn on and run. I dont know if I'm hitting the tank with to much light or not as just the few acros seem to be bleached where many of my less light dependent SPS seem fine at roughly the same tank height. Polyp extension has also been way less on these bleached acros and almost non existent on a couple. Any thoughts?? |
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06/25/2015, 10:46 AM
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#2 |
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Registered Member
Join Date: Dec 2013
Posts: 151
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Anyone have any thoughts?
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06/25/2015, 02:30 PM
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#3 |
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Registered Member
Join Date: Jan 2012
Location: Long Island, New York
Posts: 1,742
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It depends where the acros are placed. Some led fixtures produce par pockets that can be higher at the middle, center of the tank where the fixture is over.
I run similar set up as you, three hydras 26's and three t5 bulbs over a 36x18x20. My sps are doing very well with great color. I run my blues at 85% and my whites at only 7%. The t5s are two actinic and one blue plus. I've noticed in my tank when I increase the whites, colors wash out. I would look into the whites. You should lower the %'s and decrease the hours also now that some pieces are bleached. Increase them slowly with 5% increases or so every 10 days. the newer hydras have more leds per cluster and that can mean way more light. I had the old style hydras and when I switched over to the new 26's I had to do it slowly. |
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06/25/2015, 06:15 PM
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#4 |
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Registered Member
Join Date: Dec 2013
Posts: 151
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Think maybe I should get rid of my coral plus and purple plus and replace with two atinics? Then I would have 2x blue plus and 2x atinics for t5s. That might get rid of a bit more white as well.
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06/27/2015, 10:26 AM
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#5 |
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Registered Member
Join Date: Dec 2013
Posts: 151
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More thoughts? I knocked the whites down to 45% now to see if that helps. And still running fixture atax 65% about 9 inches awl. Should I keep the t5 setup I have or change out/eliminate some bulbs?
-Front- Coral plus blue plus Hydra52 blue plus purple plus -Back- |
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06/28/2015, 09:28 PM
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#6 |
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Seasoned reefer
Join Date: Jan 2007
Location: In Quebec, Canada
Posts: 3,653
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Yeah go slow/low and ramp up over a month or so
keep the T5, I got 240W of led on the same cube The hydra probably put more PAR right under it so watch for that
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Temp 80F, PH 8.5-8.0, Alk 6.8-7.2, Ca 430, Mg 1700, NO3 0-0.25, PO4 0.04, 34.4 PPT Lights @ 100% all others, 35% White Current Tank Info: 60g Cube, 120lbs live rocks, Hydra52 2x120W, 2 MP40+ 1 MP10 @ 70%, Phosban 550 GFO+Carbon, 200W Heater, SWC Skimmer, Kalk ATO, 150 gpd RODI |
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