Which GFO?

[lastlight]

it's very messy too.

I prefer the BRS HC and have used all the GFO in your poll.

It's got very few fines and most likely wasn't one of the 5 GFO tested in that study.

[Myka]

I prefer the HC GFO from BRS as well, but you use such a small amount, especially on smallish tanks, that you really have to choke the flow back in the reactor to prevent it from tumbling. On the other hand, I do like the RowaPhos, but it is sooo pricey...