These LED's just aren't cutting it. Or - are they?

neoh · #1 10-25-2013, 01:39 AM

hammers bleached, but are coming back - slowly. No growth, nothing fully extending, zoas are melting over time.

sphelps · #2 10-25-2013, 01:50 AM

sounds like too much light

Slyguy00 · #3 10-25-2013, 01:54 AM

Id agree. My corals have never been happier since switching to led

Saltnoob · #4 10-25-2013, 02:20 AM

i have the sunbrite led and it is amazing i dont know my light is about 5 inches fron water top and everything is great i got a goni that is about the size of a basketball and polyps extend like 7 inches it loves my led

neoh · #5 10-25-2013, 02:50 AM

I'll try taking it down by 10 across the blues and see if it makes a difference!

PurpleMonkey · #6 10-25-2013, 02:59 AM

In my experience with LED's (designed and built a full spectrum light for my BC29), if the corals bleach, then its too much light too fast. If they brown out, then probably want more light (or nitrates/phosphates are too high -- or a combo of the two factors).

monocus · #7 10-25-2013, 04:04 AM

i have no problems with my vertex .if you want you could borrow my par meter and check various levels of your tank

saltyair · #8 10-25-2013, 07:30 PM

I have the same fixture - I will admit that the first 6weeks i was getting worried. bleaching a little browning and disappearing coriline algae.

I did raise them by 3inches - and added a longer dawn and evening. (blue only) but 6 hrs full light.

once I did my corals have been growing and colouring up like normal - love the fixture.

sphelps · #9 10-25-2013, 04:22 AM

Quote:

Originally Posted by neoh

I'll try taking it down by 10 across the blues and see if it makes a difference!

I find the white spectrum is more responsible for high light bleaching but generally you would reduce the entire spectrum to acclimatize the corals to the new light. Most people experience coral bleaching when they make the switch due to running the fixture too high, the visible light is much different.