Zoanthid help
 

I have some brown\ red algae growing on the base of the zoathids of one my frags aswell as some of my cheato. And one the zoanthids won't open fully,



Is this a problem or normal and what should I do.

I had that happen to my maryjane zoanthids, I let it go thought it would be ok well I was wrong. They wouldnt open the next day and the algea spred over them so I diped them etc, I saved a portion of them but I lost 4-5 polyps :( I recomend you keep an eye on them and do a dip.

Do a quick 3-4 min luke warm fresh water dip followed by a thorough inspection. If there is algae growing on the zoa itself it will help you use your finger and gently rub it off. Take a turkey baster and blow it off and then place it in an area with moderate flow.

What are your ALK and Ca levels right now, any recent changes?

+1 do excactly as he says and your good.

I don't dose or test calcium and for the FW dip I don't have ph test or buffer

Your perfectly fine without a ph test on your freshwater, make sure its declorinated and near the same temp of your tank
Tap water is on average 7.0 in my city btw.

Zoa colonies in the wild are exposed to extreme changes in water quality due to incoming tides and daily rainfall into thier pools of water near the surface.

While the zoa will survive a small treatment in extreme conditions , nothing else will.

I'm not sure if it's a zoa or paly, does it matter?

No

i also noticed some on the base of some of my toad stools shoulld i do the same??

just dipped will post result later