So I posted something like this about me and being lazy lately (more like stupid busy at work and the fact its spring grass needs cutting and yard work to be done) but the short is my trates have risen a bit. I was doing 15-20gal changes 2 times a week that kept it around 20ppm lately ( last 3 weeks) ive been doing 1 50-60% change I'm at 40ppm this morning and last change saw 40ppm also. Moral is smaller more frequent changes are better.
So quite a few years ago I purchased a product (piece of equipment) that reduced nitrates in any type of tank salt ,fresh didn't matter. It did work! There was a disclaimer that stated if the seal was broken no warranty on the equipment. I think it came with a really long warranty too. Any way I opened it. I am going to from memory try to build one. I figured with my trates creeping up and a limited time on this tank we will see if....
1. I can recreate this item, if I remember it was kind of expensive
2. If my recreation will work as good as original and or what some of use are using now.
I should be able to recreate this in my "spare" time lol