After looking at the Stock Solution Spreadsheet that was on
http://www.barrreport.com/showthread.ph ... ockSol.xls, I realised that I was dosing too much KNO3.
The plants weren't complaining, and there was no algae, but there isn't a need to overdose if not needed.
My dosing for the 120L were 15ml of this:
48g Potassium Nitrate (KNO3)=8 tsp
2.2g Potassium Phosphate (monobasic)(KH2PO4)= 1/2 tsp
17g Magnesium Sulphate Heptahydrate (Epsom Salts)(MgSO4) = 4 tsp
4.0g Potassium Sulphate (K2SO4) = +- 3/4 tsp
0.5g E300 Ascorbic Acid = 1/8 tsp
0.2g E202 Potassium Sorbate = 1/16 tsp
5g EDTA Chelated Trace Elements Mix = 1 tsp
Add 500ml distilled water
The KNO3 was reduced to just 24g (4tsp), will try this month and see what the results are.
So I will be adding per day the following ppm:
NO3 - 5.30
PO4 - 0.50
K - 3.55
Mg - 0.63
Fe - 12 + 10ml of Easy Ferro a week
Two WC weekly of between 50 and 60%.