Its not true - its 4x/day. The reason for it is to ensure the tubing remains clear. A secondary reason may be that they make money. But - it brings up a question - is there a cost projection out there for GHL for maintenance - and reagents - and are there a minimum number / maximum number of tests/day?
You can go from 1 to 24 tests per day.
I did a quick cost comparison in this thread:
https://www.reef2reef.com/threads/t...tor-vs-kh-guardian.604635/page-9#post-6124107
