Power head cleaning

[toytech]

I just run the power heads in very hot water in a bucket with a few cups of vinegar and they clean themselves , i put a lid on it and it will stay hot for almost 2 hours.

[emerald crab]

Water with bleach 1/2 hour, followed by 1/2 hour water with hydrochloric (muriatic) acid. No scrubbing involved, just run the powerhead in one solution, rinse if you feel like, than run it in the other one. Rinsing after HCl optional.