I try to test alk once a week, before the trident it was daily but I do now test nitrate and phosphate at least twice a week which is way more than I used to
wow so even w/ trident it sounds like most people are still testing as if they didn't have the trident. i test alk every day and then everything else once a week w/o a trident on my system
I used to test alk daily with a Hanna and once a week with salifert. Nitrates and phosphates every day or two. Calcium and magnesium once a week. Now with the Trident I do alk with another method about once a week, calcium and mag about once a month and nitrates and phosphates about the same.. every day or two.
I have found that the Hanna and other kits do vary a bit from the Trident but as long as the Trident numbers are fairly consistent I don't care. Same for the other kits. If the numbers are roughly what they were previously that's fine. I enter them into Apex Fusion and I also write them down so I can compare with previous numbers and which kit I was using.
Overall I test much less frequently and spend quite a bit less time testing with non Trident kits.
I was bad about testing almost everything before. I now test phos. and nitrate every couple weeks, more if I see something unexpected. Alk I sanity check every now and then.