That 1kg one looks to be at a good price point. I'm always scared with powders that some flake wont dissolve and a fish would eat it.
Is it a slower process to use than a liquid solution? I have lots of tanks to do, and a wonky back, so it takes a while already.
Looks like it will treat about 20000gals for $40 shipped.
The stuff I'm using now, treats 320gal for $2 (would be about $125 for 20k gallon)
Cape Town, South Africa.
Hi. I'm back.