Jeff Rehling
Guest
Thanks. So this rock is coming from an established tank. Would I be able to detect the antipasta (just kidding) while it's in a functioning tank?
Not sure a vinegar solution wish really do much dissolving, while it will initially sure, you are going to very quickly bring the pH back up. Need something stronger like muriatic acid! Either way the acid treatment takes care of anything that might be in the first few mm of rock (phosphates, etc). Bleach will kill (hopefully) the organic components. I'd probably do bleach first then acid because the bleach alone might not get everything to detach, but the acid treatment most likely will get stuff to detach.
As to the pump cleaning, don't both diluting vinegar, it's cheap enough you shouldn't have to stretch out. And basically soak them until the coraline is all gone (or mostly gone) you could possibly try a toothbrush to help get off the final stuff, but depending upon the level of encrusting it could take a few hours, or the better part of a day.
Oh don't think about starting a tank at a school you just started working at unless you get some serious OK from the principal and all other parties involved. MolaMola did one at her school,and she managed to work out a curriculum around it. However you being very new to the hobby should get your own feet wet before you consider doing something like that.