Jro Posted July 24, 2012 Report Share Posted July 24, 2012 I started my first planted aquarium a couple months ago. The tank is a 55 gallon with 2 watts per gallon (T5HO 2x 54w 8 hours on) with CO2 injection. Substrate is fluorite and sand. Fertilizer is Macro Micro Nutrient Mix from www.aquariumfertilizer.com. I do a 50% water change every week and dose daily. In the tank I have: 6 Emperor tetras 1 BN Pleco 1 Siamese Algae Eater 2 Dwarf Loaches 15 large Amano Shrimp When I bought the Macro Micro Nutrient Mix, I was hoping for an all-in-one fertilizer and was not aware that there was no phosphate in the mix and that nitrogen was lacking. This is what the package reads: Macro Micro Nutrient Mix is composed of equal parts of potassium nitrate, potassium sulfate, Plantex CSM + Boron, and magnesium sulfate. Macro Micro Nutrient mixing instructions: Mix with a ratio of 1/4 cup of Macro Micro Nutrient Mix to 2 cups water (or 60g to 500 ml). Dose 1-4 drops per gallon per day. Start with the lowest dose of 1 drop per gallon per day and stay with that dose for 2-3 weeks before deciding to increase the dose. Increase the dose based on the needs of your plants. There are 76 drops in a teaspoon. Not wanting to waste this fertilizer I bought, I decided to buy KNO3 (potassium nitrate) and MKP (Monopotassium Phosphate) to add to this solution. I want to mix everything in one solution and I came up with without water I would need: 1/2 Cup Macro Micro 1/4 Cup KNO3 1/16 Cup MKP Monopotassium Phosphate Note: KNO3 is in a 1 litre solution mixed 3:1 water to 250mL of KNO3. Assumptions: 1 tsp = 5 mL 1 Cup = 250 mL Sorry for being so long winded but my question is this: When I am mixing this solution following the Macro Micro instructions above, would this be correct? ½ Cup (125 mL) of Macro Micro 1 Cup (62.5 mL) of KNO3 solution 1/16 Cup (15.625 mL) roughly 3 tsp of MKP Monopotassium Phosphate 1 Cup of Water Is my math correct? Quote Link to comment Share on other sites More sharing options...
jvision Posted July 24, 2012 Report Share Posted July 24, 2012 It looks right, but I'm not sure it's a good idea to mix the MKP into the solution. Phosphate tends to react with iron if it isn't chelated, which I don't think it is in CSM+B Quote Link to comment Share on other sites More sharing options...
ubr0ke Posted July 25, 2012 Report Share Posted July 25, 2012 csm+b has 7% chelated iron but I don't suggest mixing macro and micro ferts together. imo. Quote Link to comment Share on other sites More sharing options...
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