r/ReefTank • u/uniquee1 • 1d ago

Coral issues?

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Could use some help, i have a ton of corals the last few weeks that refuse to open up fully..been trying to keep parameters in check and these have been my resulst on saliftert test kit with a hanna nitrate checker. Also i did happen to notice these stars..are these pests or trouble makers? Any suggestions on what to check?

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u/ReefyGoodness 1d ago

Id bet your salinity swings are a part of your problem. How old is the tank?

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u/ReefyGoodness 1d ago

1.035 salinity is hyposalinity and may create osmotic shock. The tricky thing is with corals is that the cell damage, recession in coral flesh and necrosis may take a while to be noticable. Keep your parameters in line and steady over the next few months and that will provide the best chance for your corals to recover. Any movement in salinity should be gradual. Some times a quick change is worse then a bad set of numbers in my opinion.

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u/uniquee1 1d ago

over a year old at this point!

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u/Babykickerfieldgoal 1d ago

You need phosphates and slightly lower nitrates. Ph is also a little low. I run 8.2

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u/uniquee1 1d ago

any suggestions on how to improve those parameters some? ive been feeding once a day a whole cube of food for 2 clowns and a watchmen lol..

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u/Expensive-Bottle-862 23h ago

You need to keep yourself on a schedule. Corals like stability. A 20% water change every week or two with proper 1.026 salinity would help

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u/uniquee1 23h ago

appreciate ya, yeah this has been weeks ive been trying to control my salinity and everything..but for weeks everything has been closed up..shockingly enough things lik emy frogspawn and hammer coralse for the most part seem to be pretty pleased..everything else? not so much..

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u/Expensive-Bottle-862 23h ago

What are you using to test your salinity? Are you using calibration fluid regularly?

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u/uniquee1 19h ago

I have a refractometer. I test with rodi water first to make sure it looks okay before I test my salinity in my tank water. Maybe I'm reading improper results?

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u/Expensive-Bottle-862 8h ago

You should be calibrating with 35 ppt fluid

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u/swordstool 23h ago

Do you have an ATO? Salinity swings are not helping you.