I hope it comes out where IO left it.
If not, on the Fert section the third line of the first thread gets you a calculator(which proved to me that I'm
not a rocket scientist/takes some patience to figure for me) and if you start it off with your tank size/diy/gimmie
you will get a drop down page and the second drop list has "EI low light/weekly" (you can add later if/when
you see that it can use more). With 4x T8 you CAN have on the med or low end of the med level.
I have a shorter tank(12" from light to sub) and the Zoo Med Ultra(6700K) and the Zoo Med Flora(5000K)
together produce a lot of algae. So I need to use the Tropical sun(5500K) plus a Flora to stop this.
But on your tall tank I might substitute a 10,000K for the Ultra bulbs to off set the low visible light which
the Flora has.
I use a weekly dose of what the EI low light/weekly category says but with a substitute for one ingredient.
I should not expect to see any faster growth in my plants without all three Higher lights/ferts/CO2.
But I do see more healthy plants without symptoms of any lacking in nutrients and it's been too long since
not using these ferts to say there is no faster growth, but it's not usual.
BTW: I found a conversion on the internet but it's confusing because mg is weight and teaspoon is volume.
So it depends on what density the material you are weighing. But generally 1000mg or 1G = .48 teaspoon.