TallGuyWithTheFood
Well-Known Member
When keeping fish, i always saw a ph increase when i didnt do a waterchange. Nitrates build up in the water and a w/c is the quickest way to remove it.Let me see if I can get this to work in a side-by-side-by-side table:
MegaCrop Grow More Orchid Food
20-10-20Jack's Professional
20-10-20Total N
• Nitrate
• Ammoniacal9%
8.5%
0.5%Total N
• Nitrate
• Ammoniacal20%
12%
8%Total N
• Nitrate
• Ammoniacal20%
12%
8%Phosphate 6% Phosphate 10% Phosphate 10% Potash 17% Potash 20% Potash 20% Ca 5.6% Ca 0% Ca 0% Mg 2.3% Mg 0% Mg 0.15% S 1.9% S 0% S 0% B 0.07% B 0% B 0.02% Cu 0.04% Cu 0.05% Cu 0.01% Fe 0.07% Fe 0.10% Fe 0.10% Mn 0.07% Mn 0.05% Mn 0.05% Mo 0.07% Mo 0% Mo 0.01% Zn 0.11% Zn 0.05% Zn 0.05% SiO2 0.15% SiO2 0% SiO2 0%
I think we can see that the MegaCrop offers a lot more micronutrients along with Ca and Mg that the other two don't. Looks like I'll need to add cal-mag to the Orchid Food if I'm going to keep using it!
Too bad MC doesn't balance their nitrogen sources.
[OMG, I heard back from Greenleaf in response to my email where I asked them if they had any plans to change their N sources in light of the fact that nitrate-based nitrogen raises the pH of the medium. Their reply was:
"can you give us a science backed reference supporting your claim that Nitrate raises pH levels? I think you are just mistaken."
I sent them three links back: one to PremierTech, one to Mosaic Fertilizer company's detailed description of nitrogen's effects on pH, and one to Purdue University. We'll see...]