This is a great thread. I have great interest in Hydroid Treatment since mine is getting out of control in my 65Gal Mixed Tank (no SPS)
I do feel a bit weary treating my whole tank, since for years it had problems, but over last 2 years things clicked biologically and it just started doing really well (NO Cyano, or Algae outbreaks, can feed galore)
The downside to this Tank Water Quality improvement and extra feeding is Hydroids are also taking off.
Not sure if this was posted in a previous post, but I found this article where the Fenbendazole treatment is done (with before & After Pictures)
https://maxdraco.wordpress.com/2013...ue-cloves-polyps-xenia-aiptasia-hydriods-etc/
What I also found and ordered is a pure powder form of Fenbendazole call (Fish Fenbendzole). Available on
Amazon https://www.amazon.ca/s/?ie=UTF8&ke...targid=kwd-55984005300&ref=pd_sl_31egtzlbiq_e
But again, I'm a bit to scared to treat my whole tank and disrupt year of progress.
So the plan is to remove the easy to remove rocks and treat in a QT Tank.
That leaves a few patches in the Tank that I can't treat due to un-removable rock.
I've come up with an idea that I'm doing to test in the Treatment tank.
Basically make a Dome Chamber to put over the Hydroid Patch areas, and kind of like Target feeding Corals, to Treat the Hydroids with Fenbendazole solution.
The dome will have two air lines where one injects the treatment, and a 2nd line to remove the treatment from the dome.
To make it safer, I'll add a Cloud Agent (like Coral Snow) to the solution, so that I can see it in the clear dome, and be able to monitor leaks.
Nothing should leak into the overall tank, or very little.
This may take a few treatments to kill the Hydroids.
Higher concentration can be used for the Spot Treatment.
I'm setting up for a test trial in my QT Tank with a sample Hydroid Rock, a few coral frags (to see them not be affected).
