I've been using it for about a month now on one of my systems an 80 gallon. I wanted to try it out because on my reefer 625 I'm dosing the reef foundation stuff and it gets pricey dosing 7 different bottles. I have a doser which puts it on auto pilot though. I do not on my 80. Its keeping the big 3 in check at 10ml a day which is 5ml less than recommended for my water volume on a mixed reef with lots of coral mostly small/ medium frags. A 1000ml bottle is forty bucks so I figure 3 months on a bottle if things hold steady. Corals look good as well. Just by my calculations on my other tank I would be about 1 bottle a month and that's about 160 gal or so water volume but its mature and uses more. However I don't chase numbers and really only test alk regularly as my cal/mag stays pretty consistent with just water changes and light dosing.
To me there are some things in life worth paying extra for if its more convenient and saves me time and frustration.
I've never used TM so there's that. Found the product read up on it and tried it. The OP was asking about the FM product why are you even talking about TM? Just curious...
But as it is not more convenient but just a more expensive copy, what is your point??
