Planted Tank Obsessed
Join Date: Feb 2014
Location: Phoenix, Arizona
If you do try fenbendazole here are a few tips you most likely already read through, but redundancy is good.
Crush the powder and mix it well in water then dose with the liquid solution in your tank. Otherwise you will get chunks in you rocks, decor, and substrate which may or may not dissolve depending on the nook the particle lands in. You can dose into an hob if you prefer, which will dissolve all particles over time.
make sure you spread your dosing regime out for a full week to make double sure you have killed all the hydras. It's not needed in all cases, but a week will be thorough. I only dosed 2 packets over 3 days and stopped because I was murdering fish. luckily it worked in the three days.
Lastly, use up some of the carbon you have laying around. If not you should get some just to soak up the minuscule amount that may be left over after the majority water changes. I have six bags just laying around since I only use them to remove medication from the water column. I'm fairly certain snails and and shrimp are far more sensitive to this type of medication also which is why I say carbon may be a good idea if you want to add them later. I had no more pest snails after this medication dosing, all them were wiped out. I do have 150+ shrimp now, in the same tank and I have yet to have a death so the water changes and the carbon did it's job.
My plants never showed any signs of trauma from the medication.