PeerUnk
Community Member
Nice thread. Here's my input:
Big display tank is 600 liters non CO2 injected. I try to change water very week (15% of the tank)...
Just changed my fertizer routine and slightly my solution.
I work with 100% RO water I get in jerry cans from a water supply at my gas station, so after I taken out 75 liters via a 1'' hose I pour in the RO. Straight after I add the remineralizer and front load macro mix (25 ml) so the new 75 liters would contain (slightly adjusted) a baseline of:
Ca 10 ppm, Mg 5, NO3 15, K 4.0, PO4 2.1, SO4 35, Cl 2.3, Na 1.0, 2.6 dGH, 0 dKH .
That 1000 ml premixed solution is DYI with:
20 gr of KNO3,
68 gr of Mg(NO3)2.(H2O)6 - MagnesiumNitrate,
9 gr of KH2PO4,
10 gr of sea salt,
83 gr of Magnesium Sulfate (MgSO4.7H2O) - Epsom Salt
I overlooked something and was a bit short on K, so added 13 ml of 3M KCl.
When I skip a water change out of lazy-ness (Yes it happens
) I want to make up for the uptake of that period. So I found some uptake figures of high tech tanks and made an unscientific educated guess my uptake will be 10% of that. So I created a separate 'uptake solution' (based on Marschner and some studies on compositions of dry aquatic plants) and will dose accordingly for that skipped week: N 0.35, K 0.35, P 0.05, Ca 0.12, Mg 0.07 ppm.
For micros: I have a dry mix of
1 part of the much debated CSM+B (which will be phased out sooner or later)
1 part Tenso cocktail
1 part Ciba Librel FE-DP (Fe =7.0% w/w + Fe DTPA = 6.7% w/w)
From this I take one small spoon (0.11 gr) and mix this with 450 ml of microwave warmed RO water.
The 600 liter tank is getting daily 100 ml of this mix and would result in:
Fe 0,003666 ppm
Mn 0,000683
B 0,000087
Zn 0,000131
Cu 0,000094
Mo 0,000028
I think it's pretty lean and I leaned it a lot the last few years (it was 20 times more)
Not sure the ratios are balanced enough...
Limnobium and Phyllantus as floaters are not able to reach the soil and ain't complaining, so I guess It's all good for now.
Cheers!
Big display tank is 600 liters non CO2 injected. I try to change water very week (15% of the tank)...
Just changed my fertizer routine and slightly my solution.
I work with 100% RO water I get in jerry cans from a water supply at my gas station, so after I taken out 75 liters via a 1'' hose I pour in the RO. Straight after I add the remineralizer and front load macro mix (25 ml) so the new 75 liters would contain (slightly adjusted) a baseline of:
Ca 10 ppm, Mg 5, NO3 15, K 4.0, PO4 2.1, SO4 35, Cl 2.3, Na 1.0, 2.6 dGH, 0 dKH .
That 1000 ml premixed solution is DYI with:
20 gr of KNO3,
68 gr of Mg(NO3)2.(H2O)6 - MagnesiumNitrate,
9 gr of KH2PO4,
10 gr of sea salt,
83 gr of Magnesium Sulfate (MgSO4.7H2O) - Epsom Salt
I overlooked something and was a bit short on K, so added 13 ml of 3M KCl.
When I skip a water change out of lazy-ness (Yes it happens
) I want to make up for the uptake of that period. So I found some uptake figures of high tech tanks and made an unscientific educated guess my uptake will be 10% of that. So I created a separate 'uptake solution' (based on Marschner and some studies on compositions of dry aquatic plants) and will dose accordingly for that skipped week: N 0.35, K 0.35, P 0.05, Ca 0.12, Mg 0.07 ppm.For micros: I have a dry mix of
1 part of the much debated CSM+B (which will be phased out sooner or later)
1 part Tenso cocktail
1 part Ciba Librel FE-DP (Fe =7.0% w/w + Fe DTPA = 6.7% w/w)
From this I take one small spoon (0.11 gr) and mix this with 450 ml of microwave warmed RO water.
The 600 liter tank is getting daily 100 ml of this mix and would result in:
Fe 0,003666 ppm
Mn 0,000683
B 0,000087
Zn 0,000131
Cu 0,000094
Mo 0,000028
I think it's pretty lean and I leaned it a lot the last few years (it was 20 times more)
Not sure the ratios are balanced enough...
Limnobium and Phyllantus as floaters are not able to reach the soil and ain't complaining, so I guess It's all good for now.
Cheers!
