Talking hydro recirculating dip system, dutch pot.
Lets add first aditives, in my room they are. voodoo, sensizym,big bug, nirvana. lets stay for a day, each one when it is need (voodoo first 3 weeks, big bug 4-6 weeks, sensi all weeks ,etc), then adjust Ph. 5.9 goes nice, and 0.1 more every week. 6----6.1----6.2----6.3 this is by block iron and nitrogen uptake, and no nitro nor iron at the end.
Many plant likes 6-6.5 even at hydro systems. start veg at 5.5-5.8 for nitro uptake and P-K block.
next day mix nutrients , im just enjoy my own mix, lucas formula with soft and hard water.
hard micro 2-0-0, hard bloom 1-3-4
soft micro 5-0-1, soft bloom 0-5-4
liquid big bud 0-1-3 also with BB powder 1 week each one
soft makes 5-5-5 perfect for veg
hard makes 3-3-4 and a new world for NPK ratios. mixing it at desired ratios like.
40 big bud + 25 hard bloom + 10 soft micro makes 25-38-77 ----5 N- 7.6 P- 15 K ,near a 5 week blooming, with desired 1:3 N to K and 1:2 P to K.
How to mix correctly. fill 1/3 RESERVOIR plain water. fill a soda or similar bottle 2 liters at 3/4 of plain water add ONE aditive, mix the bottle and add to reservoir. then next aditive, then 3rd aditive......Ph correct
next day add FIRST micro same way, mix it into a bottle then add to res, stir the mix tank ,take the botlle, mix bloom, add and stir mixture.
Now you have all ingredients into res. Ph adjust, FILL plain water to the EC you wish. Ph another time now and a few hours later. First hours and after the pump recirculates makes the mayor changes with the Ph. when correct Ph mix with a syringe and a glass at lest 1:50 acid with water, do not add acid directly it will precipite all that it touch, nutrients in fact, add water to a glass and then add syringe the few mililiters of acid with half glass.
take numbers on a paper to remember for the next week
You have the right NPK ratio at the correct concentration of nutrient, plenty of aditives with the Ph you wish to have. now use that for the next 7-15 days your budget can afford, this is important thing, voodoo and other aditives makes a 25 galon tank worth in my country "una pasta gansa" in other countrys as far as 15 dollars. Tomatoes cant afford that ,only cannabis and few more plants can, even at sunlight.
the best NPK numbers are those that goes well in your plants, look for deficency, use halo-harpin or similar, alwayts stay at lower nutrients scale, flush every week with 1/3 strengh of previsously ween (look EC meter) and many tricks more
DESPITE ADVANCED NUTRIENTS CALCULATOR, you will burn the dessert with taht ratios