I would calibrate/test your kits. http://ca.geocities.com/[email protected]/01.01.Test.NO3.PO4.pdfIt seems like I have been dosing the heck out of the tank and not seen a great deal of results. It seems very difficult to get much movement in nitrate, especially. I am dosing over 20ml of the phosphate-free solution in a day sometimes and I don't think that I have ever seen nitrate go as high as 10ppm.
Jeff Kropp said:How do you explain your accrual of a 25/1 N/P ratio while dosing a 3/1 ratio solution?
Since I do WCs every week (tank doesnt get to 10 day mark), should I adjust this ratio? It seems like PO4 isn't being consumed by the plants as fast as NO3.Edward said:Dosing once NO3O4 10:1 gives approximately 10:1 ratio in the tank on the end of the 10th day. But, dosing 10 days 1:0.1 gives usually 5:0 ratio after 10 days.
90 gallons equates to approximately 340 litres accordingly I believe adding 20ml of PF solution is only adding approximately 1.3 ppm of NO3 to your tank. If you find after a week that 20ml is not increasing it then you should try perhaps 30ml the following week and 40ml the next until you are getting the reading of NO3 that you desire in your tank.TortoiseBoy said:How much do you think that I should be dosing for a 90 gallon tank (2.44 wpg, pressurized CO2) that has been set up about 2 months? It seems like I have been dosing the heck out of the tank and not seen a great deal of results. It seems very difficult to get much movement in nitrate, especially. I am dosing over 20ml of the phosphate-free solution in a day sometimes and I don't think that I have ever seen nitrate go as high as 10ppm.
The articles under the following link explain how to calibrate your test kits using the solutions.TortoiseBoy said:Do you think there may be something wrong with my nitrate test kit
Firstly I think we all agree with TortoiseBoy with respect to the way Edward conveyed his point.Jason Baliban said:I am about to try this method but I have made up the SS with just KNO3 and KH2PO4....i dont have any K2SO4. What is my SS going to lack because of this omitted ingrediant? I have Flourish K and was think of using that to fill in the blanks.
Hiskids said:So the HM digital TDS meter from Air, water and Ice Co. reads in ppm . THe PPS worksheet expects micro Siemens. Is there a handy conversion? Come to think of it, is the TDS used at all in the worksheet's other calcs or in fine tuning the method? Seems to be just nice to know, but not used.
Did I miss something? Just montoring your resins from RO/DI to predict changeout. Maybe watching the overall TDS of aquarium to make sure it doesn't get too high and in need of a water change?
My tap is 124 ppm and my tank is 447 ppm.
Maybe this relates to Edward's unrelated quest to breed tetra by keeping water soft?