Help with ID, killing zoas

medusala · Apr 5, 2019

This old post said a blunt end sea hare eats them: https://www.thereeftank.com/forums/f184/colonial-hydroids-how-do-you-get-rid-of-them-96296-2.html

Act1n1c_L1fe · Apr 5, 2019

MrObscura said:
As for dipping no, but I have heard people have success by smothering tge with epoxy or super glue. Or injecting them with a kalk paste. I wonder if aptasia x would work on them in that case?

Aptasia x doesn’t do anything. Tried that

Act1n1c_L1fe · Apr 5, 2019

MrObscura said:
Not at all, rodi is pure water and will absorb anything it can, it's actually damaging to living tissue.

Not saying people haven't had success with zoa dipping in rodi, but it's not the same at all.

If rodi wasn’t as beneficial as tap water, why do we use rodi in our tanks? Rain collects many harmful toxins in the atmosphere that could damage coral. Rodi is sterile, meaning there’s NOTHING in the water. If there’s nothing in the water, nothing can harm coral. Yes it absorbs stuff, but so does rain water.

MrObscura · Apr 5, 2019

You're not dumping rodi straight in your tank(outside of top off), you start with it because it is pure and everything needed is added with your salt mix.

The fact that it is sterile is exactly why it's harmful to living tissue. It aggressively absorbs anything it can. Again, not saying people haven't had success dipping zoas, just pointing things out. The reason it kills hydroids is the same reason it's damaging to living tissue.

Act1n1c_L1fe · Apr 5, 2019

MrObscura said:
You're not dumping rodi straight in your tank(outside of top off), you start with it because it is pure and everything needed is added with your salt mix.

Act1n1c_L1fe · Apr 5, 2019

Act1n1c_L1fe said:
Yes I do, auto top off.

And you could if there want anything in salt, I dose multiple different trace elements. Never the less, dipping in rodi is better than dipping in tap water. Especially because here in Florida, there’s many chemicals in tap water such as chlorine.

MrObscura · Apr 5, 2019

Everything but water remains in the tank during evaporation so rodi top off is simply replacing what's now missing. Not the same thing.

But instead of arguing just to argue, let the OPs thread get back on track.

medusala · Apr 5, 2019

lol. yeah HOW TO KILL HYDROIDS?

Seems so many people post this, with no definitive answer.

Act1n1c_L1fe · Apr 5, 2019

The purpose of the rodi dip is to kill hydroids. Putting them in tap water will do nothing because they will have nutrients to support themselves. The ro/di won’t hurt zoas because they don’t consume nutrients in the water, they are photosynthetic which can be supported by weekly feedings. Rodi water won’t hurt zoanthids. It may hurt more sensitive corals such as acro’s which rely on minerals in the water column.