Zoas not opening up

Fredrxn

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Sup guys for last 3 weeks my zoas seem not want to open…I don’t feed them could that be the problem…seems like they open more if I blow them off…just tested par there in 80 to 90 par…I am dosing all for reef with a apex dose 12 mls daily…no changes in tank…anyone have any clue??heres some pics of the tank zoas apex light schedule

no3 15
Po4 0.05

1198E3FB-6D4C-44B0-A62B-E0BF541279B8.png 7D2D35EF-F454-4CC6-969E-37D6C128F97D.png 2E0D6386-2A29-43E4-B4A4-64E7E8F75425.jpeg 18DF1236-6559-4D5E-8784-14D5C572EC1E.jpeg 590E3C93-2AF5-4113-A170-ED8442F2EA95.jpeg 6410A5CA-74F0-4A16-8F53-76984F0AFA20.jpeg 3B6C9D7F-17CC-4F2E-9C28-311C6BAFBCF9.jpeg CC32D40D-88F6-40E6-B496-0220B488A6E2.jpeg 17EED9AA-19E3-44B5-9EBF-EE729E83C86B.jpeg 17FA23BD-F50B-4495-8A02-6B0A37277E31.jpeg
 

vetteguy53081

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Sup guys for last 3 weeks my zoas seem not want to open…I don’t feed them could that be the problem…seems like they open more if I blow them off…just tested par there in 80 to 90 par…I am dosing all for reef with a apex dose 12 mls daily…no changes in tank…anyone have any clue??heres some pics of the tank zoas apex light schedule

no3 15
Po4 0.05

1198E3FB-6D4C-44B0-A62B-E0BF541279B8.png 7D2D35EF-F454-4CC6-969E-37D6C128F97D.png 2E0D6386-2A29-43E4-B4A4-64E7E8F75425.jpeg 18DF1236-6559-4D5E-8784-14D5C572EC1E.jpeg 590E3C93-2AF5-4113-A170-ED8442F2EA95.jpeg 6410A5CA-74F0-4A16-8F53-76984F0AFA20.jpeg 3B6C9D7F-17CC-4F2E-9C28-311C6BAFBCF9.jpeg CC32D40D-88F6-40E6-B496-0220B488A6E2.jpeg 17EED9AA-19E3-44B5-9EBF-EE729E83C86B.jpeg 17FA23BD-F50B-4495-8A02-6B0A37277E31.jpeg
There are a number of factors why zoas close up. Some are water movement/flow as zoas do not require the consistent high flow conditions that SPS corals do. I would consider a moderate flow environment ideal but Zoanthids, like most corals, can adapt to low or high flow. In high flow, you will typically see polyps grow closer to the rock with shorter stalks. Another is lack of feeding and food as infrequent feeding and ultra low nutrient conditions can lead to entire colony meltdowns. Target feeding is not a requirement as Zoanthids are photosynthetic. I have found that target feeding Zoanthids always provides mixed results, when a food particle falls onto the polyps. Also, lack of feeding and low nutrients can lead to an entire colony melting down. You dont need to target feed as zoas are photosynthetic. Target feeding zoas always provides mixed results when a food falls onto their polyps.

Back to parameters, good water quality is a must.
dKH: 8.0 - 11.0
Calcium: 400 - 440
Magnesium: 1300 - 1350
Iodide: Maintained via regular water changes or manually at small dosages
Temperature: 78-79 degrees
pH: 8.1-8.3
Phosphates: .04 - .08
Nitrates < 10

Asterina stars, little tiny tiny spiders and nudibranchs also will make them miserable to point of death as will aptasia, worms like spinoids or vermetid snails. A few things to look for.
 
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Fredrxn

Fredrxn

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There are a number of factors why zoas close up. Some are water movement/flow as zoas do not require the consistent high flow conditions that SPS corals do. I would consider a moderate flow environment ideal but Zoanthids, like most corals, can adapt to low or high flow. In high flow, you will typically see polyps grow closer to the rock with shorter stalks. Another is lack of feeding and food as infrequent feeding and ultra low nutrient conditions can lead to entire colony meltdowns. Target feeding is not a requirement as Zoanthids are photosynthetic. I have found that target feeding Zoanthids always provides mixed results, when a food particle falls onto the polyps.

Back to parameters, good water quality is a must.
dKH: 8.0 - 11.0
Calcium: 400 - 440
Magnesium: 1300 - 1350
Iodide: Maintained via regular water changes or manually at small dosages
Temperature: 78-79 degrees
pH: 8.1-8.3
Phosphates: .04 - .06
Nitrates < 10

Asterina stars, little tiny tiny spiders and nudibranchs also will make them miserable to point of death as will aptasia, worms like spinoids or vermetid snails. A few things to look for.
Think I might just dip the zoas…here’s a icp test from a few weeks do u see anything in there that would make zoas not open

13364C56-6E2F-45B9-9247-36967424BD91.png D511BE15-F8F7-49B7-9E85-AD74BB001BB8.png 54908409-455B-4E24-A6AC-F60235BA5013.png
 

vetteguy53081

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Think I might just dip the zoas…here’s a icp test from a few weeks do u see anything in there that would make zoas not open

13364C56-6E2F-45B9-9247-36967424BD91.png D511BE15-F8F7-49B7-9E85-AD74BB001BB8.png 54908409-455B-4E24-A6AC-F60235BA5013.png
IUodine a little low on ICP
You can add Iodide to water which zoa convert to needed iodine. Also assure moderate- not bright light and subtle water flow
 

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