Aquatic Plant Central - View Single Post - wkndracer trying to start with PPS classic

wkndracer · 07-01-2009, 11:19 AM

Continued frustration with PPS and the calculator

I truly wish Edward would contribute again to this. 6 days have yielded the following.
75L starting out with NO3 reading 20ppm, PO4 .5ppm Now NO3 30ppm, PO4 1ppm
75R starting out with NO3 reading 10ppm, PO4 .5ppm Now NO3 >15ppm, PO4 1.5ppm

Using the calculator I had set one tank to hold value and one to drop NO3 levels with the following resulting dose recommendations.
75L NF 5.8ml, Mg 4ml
75R SS 7ml, PF 8ml, Mg 8ml

The spread sheet Edward had set up was down loaded for tracking my tanks. It includes in the solution section a Discus Solution as follows.
0.00:0.00:1.00 (NO3:PO4:K)
KNO3 - 0.00 g
KH2PO4 - 0.00 g
K2SO4 - 37.12 g
in 500ml

The calculator and related postings contain no information to factor it in for use so I've not made it up. That said with tested results going the wrong way I suspended dosing today other than the trace mix and dry dosed 9 grams K2SO4 based on Chuck Gadd's calculator for 16.7ppm Potassium on the 75R and 17.8 ppm Potassium on 75R

Now that I'm walking or backing away from using the calculator I don't know where that leaves me with PPS classic.

07-01-2009, 11:19 AM	#18 (permalink)
wkndracer Senior Member Join Date: Mar 2008 Location: Citrus County, Florida Posts: 126 iTrader Ratings: 0 Plant Points: 17000	Continued frustration with PPS Continued frustration with PPS and the calculator I truly wish Edward would contribute again to this. 6 days have yielded the following. 75L starting out with NO3 reading 20ppm, PO4 .5ppm Now NO3 30ppm, PO4 1ppm 75R starting out with NO3 reading 10ppm, PO4 .5ppm Now NO3 >15ppm, PO4 1.5ppm Using the calculator I had set one tank to hold value and one to drop NO3 levels with the following resulting dose recommendations. 75L NF 5.8ml, Mg 4ml 75R SS 7ml, PF 8ml, Mg 8ml The spread sheet Edward had set up was down loaded for tracking my tanks. It includes in the solution section a Discus Solution as follows. 0.00:0.00:1.00 (NO3:PO4:K) KNO3 - 0.00 g KH2PO4 - 0.00 g K2SO4 - 37.12 g in 500ml The calculator and related postings contain no information to factor it in for use so I've not made it up. That said with tested results going the wrong way I suspended dosing today other than the trace mix and dry dosed 9 grams K2SO4 based on Chuck Gadd's calculator for 16.7ppm Potassium on the 75R and 17.8 ppm Potassium on 75R Now that I'm walking or backing away from using the calculator I don't know where that leaves me with PPS classic.