The reason why I am asking first what chemicals you use to make the two solutions is because I see people using all kind of stuff and then wondering why it doesn’t work. You are talking about a calculator, do you have a link?
The original formula is here
How is your different?
If you like to modify the fertilizer content maybe due to higher fish load than I would do so later, when your plants are in good shape and the ecosystem is stable.
Here is a template I use to describe the fertilization:
How do I start PPS-Pro?
We all know new setups are challenging. Plants need time to adapt to new conditions.
To begin, aquarium water can start at any nutrient levels. Then we start dosing daily PPS-Pro solution #1 (Macros) at 2 ml per 10 gallon and PPS-Pro #2 (Trace elements) at 1/10th of the recommended 1 ml per 10 gallon for about four weeks to let the plants to adapt. (Daily dose 2 ppm NO3, 0.2 ppm PO4, 2.66 ppm K, 0.01 ppm Fe)
During this time and in to the future we need to switch from test kits to conductivity readings. This is easier, cheaper, faster and more accurate to overall living condition. Everything in an aquarium, alive or not, has some relationship to conductivity. TDS-tester
The way it is done is to maintain consistent levels of pollutants, like fertilizers, substrate leaks, fish waste, decoration leaks and other with water changes. Some setups involve large water changes at times, and some more balanced, not so much. That’s the beauty. Plants and fish love consistency.
For example, when your tap is 300 µS, one PPS-Pro daily fertilizer dose is 6µS. This one dose is 1 ppm of NO3. So to limit the NO3 to 15 ppm we need to make sure the conductivity reading is kept under (6 x 15) + 300 = 390 µS. This is so easy.
After the four weeks we start dosing daily PPS-Pro solution #1 at 1 ml per 10 gallon and PPS-Pro #2 (Trace elements) at 1/10th of the recommended 1 ml per 10 gallon and follow the conductivity TDS readings for water changes. Yes, no more test kits. (Daily dose 1 ppm NO3, 0.1 ppm PO4, 1.33 ppm K, 0.01 ppm Fe)
If you feel like needing more fertilizer then there is no problem to dose more ml of the PPS-Pro solutions. The conductivity reading will take care of it and balance it out.
(Copied from here
You can skip the 2 ml per gallon dose and go directly to 1 ml per 10 gallon because you use RO water. RO is a slow supply.
The last is Ca Calcium, an essential plant nutrient. Because RO doesn’t have Ca we need to add it. This is done daily by adding 0.3 ppm of Ca with CaSO4. This can be done dry or in a solution.
Dry 0.3 ppm Ca daily dose, 2.6 µS
0.052 g per 10 gallon or 40 L
0.155 g per 30 gallon or 120 L
0.258 g per 50 gallon or 200 L
0.387 g per 75 gallon or 300 L
0.516 g per 100 gallon or 400 L
Calcium Solution 0.3 ppm Ca daily dose, 2.6 µS
3 ml per 1 gallon or 4 L
3.44 g CaSO4 in 2000 ml RO
One Ca dose increases conductivity 2.6 µS and one PPS-Pro dose of 1 ppm NO3 increases conductivity 6 µS, a day. RO is usually 10 µS. To limit NO3 to 15 ppm with Ca dosing we need to maintain water column at 140 µS with RO water changes. ((2.6 + 6) x 15) + 10 ≈ 140 µS
Note: For tap water, example tap 300 µS, ((2.6 + 6) x 15) + 300 ≈ 430 µS