Originally Posted by gmanwho
hey bignev, i appreciate your post. Im running about 1300 ppm of co2.2/3rds call nit to jacks hydro. so thats like 3 tbsp of jacks hydro, 2 tbsp of cal nit. i have a 100 gal rez but usually run 75 gal. i end up putting 12 tbsp of jacks hydro an 9 tbsp of cal nit.
100 w a sq foot is a demanding environment. im glad you posted. What ratio are u using the jack to cal nit???
appreciate the post.....
hey, buddy! the 3 spoons to 2 spoons is not the right way to measure by volume. by volume you use equal parts. so if you use 3 spoons of jack's you use 3 spoons of calcinit.
this will approx give you the ratio 1/.67.
say you want 900 ppm at the .5 conversion. the ratio is 540 ppm/360 ppm or 1/.666 jack's/calcium nitrate.
750 ppm is 450/300, 600 ppm is 360/240, and so on.
if you have a meter you can take a container of water (assuming ro or distilled) and add jack's first until you hit your target. for 900 ppm add jack's to 540 ppm but count how many spoons it takes to reach it at the same water level in the same container every time. then simply put the same number of spoons of the calcinit on top of that and you are good to go.
your 3 spoons to 2 spoons is leaving you way short on the nitrogen.
you are correct that your lighting requires more concentration but maybe start at around 900 ppm and see which way it goes. i don't know what kind of system you are using but that is a safe starting point.