Hi everyone, been reading here for a while now and finally came around to registering since i have a question i hope you guys can answer.
I have a planted tank at 450L (119 US.gal).
It is moderately planted would say 60% of the tank is planted with a mixture of slow growing, medium growing and a few fast growing plants.
About the tank:
4 x T5s at 54watts each (planning on building a led fixture in the near future)
Pressurized CO2 running through a JBL controller with a PH probe.
Eheim 2080 canister filter
50-60% water change every week
Tank has been running for almost a year
Water values (measured today)
PH - 7.1 (set on the controller to achieve a CO2 solution of 30ppm)
KH - 8,5-9;ish
NH4 - <0.05 ppm
NO2 - <0.025 ppm
NO3 - 20-30 ppm
FE - Not visible so assuming zero or close to that
PO4 - 1,5> ppm
So what is clear is that PO4 is really high and FE is non existing. I am mixing my own PMDD in accordance with this site
25g Potassium Nitrate
5.8g Potassium Phosphate (monobasic)
11g Potassium Sulphate
20g Magnesium Sulphate Heptahydrate (Epsom Salts)
500 ml distilled water
And in a separate container i am mixing my micros, a solution i bought here in Sweden called MiPlus PRO (should contain more iron).
25ml of that solution in 500ml of water (according to the bottle)
The bottle itself says it contains the following.
So I have been dosing daily according to this formula
2 ml of Macros solution per 10 gallons (US) or 40 litres
1 ml of Micros solution per 10 gallons (US) or 40 litres
and doing a 50-60% water change every week.
So now I am at a loss, not sure how to correct the problems, I am assuming i should start lowering the Macro dose and upping the Micro dose. I don't wanna mess anything up so i though i should ask here first perhaps. To see if anyone have any tips or might spot something that is totally out of place in the info above?
I might also add that i have some issues with holes in the leaves of some plants mainly my echinodorus and my Nymphoides sp. 'Taiwan'.
Something i never had issues with during the first six months of the tanks run time.
I also have some dark green algae type on some plants (older leaves) that is really hard to remove.
If I have forgotten something important please let me know, and sorry if my grammar is bad, Engrish is not my native language!