Zoas losing colors

[Reefzzz]

Hi guys especially those expert with Zoas..

It had been a few months since i finally discover my Zoas are losing its colors but the rate is slow. Only Zoas are affected. The rest of the corals as per normal.

Changes: Changing to a hamiliton 150W 14k bulb. Previous bulb is an unknown brand of 10K.

Water parameter as per normal as the SPS and LPS are doing fine.

The Zoas are still spreading but just that the colors are fading.

Any reefers experience this kind of situation.

All advise welcome and appreciated.

Thanks..

[reeftask]

try to change the light to 10k

[Reefzzz]

try to change the light to 10k

Thanks bro... was thinking of the same thing as well... Hope it turns out well..

[reeftask]

there are lots of issues on 14k mh. Thats why I still not changing mine. Just too afraid.

[Brownie]

how abt 20k lamps?

[VanDeam]

bro , try iodine .

Anything thats red and u want the intensive put it high up , anything greenish lower . just remember that principal .

[reeftask]

how abt 20k lamps?

I dont know about 20k. nobody complains. But after 14k is so problematic and I still like my 10k, so I stick to it.

[giantbicycle]

Anything thats red and u want the intensive put it high up , anything greenish lower . just remember that principal .

Dont mind sharing in greater depth of this principle?

[VanDeam]

quoted from Julian Sprung , Reef volume 1 ,

cant remember exactly wat is spoken , but any thing thats in intense color , red , orange etc .. its cost they produce pigmentation to shield them from excess UV rays

thats a lay man explaination .. gonna read back and quote when free busy now lol : P

can come my place to see , placed 2 same zoo one high up one low down , using 150W mh , High up retain the color while the one at the bottom faded . and its just place in the middle of the tank Vs 2inch below surface . not sand bed .

[reeftask]

quoted from Julian Sprung , Reef volume 1 ,

cant remember exactly wat is spoken , but any thing thats in intense color , red , orange etc .. its cost they produce pigmentation to shield them from excess UV rays

thats a lay man explaination .. gonna read back and quote when free busy now lol : P

can come my place to see , placed 2 same zoo one high up one low down , using 150W mh , High up retain the color while the one at the bottom faded . and its just place in the middle of the tank Vs 2inch below surface . not sand bed .

how deep is the one that had faded? and is it 10k,14k or 20k mh?

[Reefzzz]

bro , try iodine .

Anything thats red and u want the intensive put it high up , anything greenish lower . just remember that principal .

Bro, i dose iodine everyday. My routine never change. I check all my parameters weeks after weeks but all are fine. I also conclude that if the SPS are fast, there can't be any issues with the water parameters.

I will change back to the 10k to see if the condition improve. I had change to the 10k bulb for about 4-5 mths already. The effect of discoloration is slow for my case and did not take notice of it initially.

Thanks for your advise.. cheers

[kareen]

Perhaps time is need to tell whether the 10k bulb bring back the fading colours.... Do give us some of your drawn conclusion in time, ok?

[VanDeam]

reeftask !! u come my house so many time u never notice , bo steady leh , next time u come remind me to point to u .

yeah reefzz time will tell , i got some books on zoo lend u if u drop by any time to check out ur mangrove ..

cheers.

[Reefzzz]

I will change back to the 10k to see if the condition improve. I had change to the 10k bulb for about 4-5 mths already. The effect of discoloration is slow for my case and did not take notice of it initially.

Opps.. I meant to say that i had change to 14k bulb from my previous 10k bulb for 4-5 mths already.

Hi Kareen, sure.. Will check if there are improvement in the zoas after i change my bulb. I hope it will be better.

Bro Vandeam, thanks for the offer of your books. Will drop by if i have the time..

[kareen]

Opps.. I meant to say that i had change to 14k bulb from my previous 10k bulb for 4-5 mths already.

Hi Kareen, sure.. Will check if there are improvement in the zoas after i change my bulb. I hope it will be better.

Bro Vandeam, thanks for the offer of your books. Will drop by if i have the time..

Anything else u've change? If not, then likely the cause.... 14k or 20k bulb looks pleasing to our eyes but in term of spectrum, they are out of the sun's specification.

My tank is near the balcony and about half of it have daily "sunbath".... It's true that I get a bit more algae from it but I do notice that corals seems to be 'happier' than those didn't. My MH bulb is 14k.....

[kareen]

PS: Also, zoas come from pretty shallow depth and hence light ray is even more resemble the sunlight....

[kareen]

It's almost a month now.... Reefzzz, any indication of improvement there?

[Fishyfish]

Hi Bro,

Do you dose trace elements?

Might be useful if all else checks out.