Why is it.....

miami dolfan

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that you spend a fortune on higher priced zoas and the cheaper ones are the ones that prosper? I am so frustrated with this that I am contemplating going fish only. I have tried birds nest frags, they bleach in 2 weeks. Tried acans, died in a month. Even my frogspawn frags have lost their heads in a short period of time. I don't get it. Maybe I have too many fish??
 
I know how you feel. For some reason the least I knew about reefing the better my corals were doing. I guess once we know a little bit we become too confident that everything's ok.
 
i had the same issue with my first tank. have you had this problem since you started the tank or just recently?
 
Just recently. I had blue tubs and midas zoas which were doing well and now they are always closed. I have other frags around the tank which are open. Could it be the lenses I installed recently on my LED units?
 
Miami Dolfan;870391 wrote: Just recently. I had blue tubs and midas zoas which were doing well and now they are always closed. I have other frags around the tank which are open. Could it be the lenses I installed recently on my LED units?

its a possibility. did you acclimate the corals to the new lenses? when you make a change like that its like swapping your bulbs out and you need to shorten your light cycle by several hours, up to half the time you normally have it. then add a half hour every week until you're back to normal.

Edit: did it just start happening immediately after you put the new lenses on or before?
 
Give us a full run over of the system
tank size
water change schedule
salinity level
calcium
magnesium
alkalinity
ph
nitrates
phosphates
equipment
and anything else such as additives and whatever else you can think of

When you put optics on led's they become very intense and it is a possibility that your blasting your corals with to much light. If your led's are dimmable I would start at 25% power and increase that by 5% every week and stop around 75-85%. It does sound like this may be the culprit, if you can't dim your led's hang the fixture 6 inches higher from where it currently is to help lessen the par.

Get us the above information and we can most defintely help you find a solution.
 
Zoas grow better when you ignore them.......it's almost scientific fact
 
barry_keith;870405 wrote: Did you order optics for all your fixtures? Did you raise the lights up after the optics?

If you just used the 90's you got from me that shouldn't be the problem.

Did you get a reactor? I think your calcium reactor needs some tuning also.

let me know if I can help out Orlando

I got 60s and 90s but mostly 90s and spread them out. I only installed 7 60's on each unit. The other frags are doing fine. I don't know how to adjust the reactor. To be honest, I'm not sure it's even working right. I don't see much coraline growth.

Edit:
kzoo;870574 wrote: Any white spots on them?

No white spots that I see, although, when they're closed it looks all white.
 
I'd put my money on the light being too intense.
I have a MMled w/no optics(120degree) mounted 6" above an 18" deep tank.
I was having some bleaching and even lost a few things so I was worried the light wasn't strong enough.
Then a friend stopped by with a PAR meter and I was: 1600 at surface, 450 top rack and 200 at the bottom. Needless to say I am not shopping for a new light anymore.

Now, I think any led fixture with 3+ watt chips is more likely to be giving too much than too little. I'm also thinking optics are only needed on tanks taller than 24". That's my $.02 anyway.
 
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