I purchased their 1 gallon waste jug which was like $4. They say each test takes 30ml of tank water, so if you test twice per day you'd need to empty the jug roughly once every 2 months or so (1 gallon = 3,785ml / 60ml = 63 days). You can test as little as once per day, which would bump it to emptying every ~4 months.I also have some reservations about the waste. If it needs to be neutralized how many times am I going to be doing that? I don’t want a 1 gallon jar for waste under my tank. My trident one is tiny to save space and gets emptied once a week.
I am hopeful the phosphate tests are as described "Phosphate: +/- 0.01 PPM, +/- 5% of reading". If not, this thing will be an epic fail, which IMO would be surprising.Every time I ask people say they got the info from beta testers.



