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Long term experience with PPS Pro?

39K views 68 replies 16 participants last post by  forddna  
#1 ·
Has anyone had any long term experience using PPS Pro? If so can you post it?

I’ve been using PPS Pro for about 18 months. I still do 10 – 20 % water changes per week. I test regularly for KPN. Over 18 months I’ve noticed that TDS based on conductivity gradually increases requiring occasional more than 20% water changes. I’ve also noticed that K tends to build up and PO4 and NO3 decline requiring additions of Ca(NO3)2 and KHPO4.

I do have to say that I have been very successful growing every plant that I’ve tried to the point that I have thrown out way more plants than I ever bought (even some considered difficult like Cabomba Furcata). The problem is that without regular monitoring of KPN levels, these fertilizer elements eventually get out of control using a fixed once a day plan (without radical water changes).

It seems to me that any fixed once a day plan (without radical water changes) is doomed to failure since it doesn’t account for the individual nature of each tank.

What is your experience?
 
#65 ·
Andy, first off, thank you so much for the detailed feedback.

Now, my question is - those percentages you list, are those based on the normal mixing with 1 liter water and dosing 1ml per 10g, or the actual percentages YOU are using for your specific dosing program?

(If I am doing a traditional once a day dosing of 1ml per 10g, do you I use the percentages you posted, if I wanted to mimic your tweaking of the program?)
 
#66 ·
See if this sounds right. Your tweaked version of PPS Pro would be:

14.3g KNO3
10.3g K2SO4
21g KH2PO4
9g MgSO4

mixed with 1 liter of distilled water, and:

13.6g CSM+B

mixed with 1 liter of distilled water

???
 
#67 ·
See if this sounds right. Your tweaked version of PPS Pro would be:

14.3g KNO3
10.3g K2SO4
21g KH2PO4
9g MgSO4

mixed with 1 liter of distilled water, and:

13.6g CSM+B

mixed with 1 liter of distilled water

???
You just about got it.

To answer your first question, the percentages listed are how much my recipe is of the original recipe. So simply take the original recipe and multiply it times my percentages and you will come up with how much of each ingredient to mix with 1 liter of water.

All of your math is right except for K2SO4, which would be 10.03 grams.

I need to do some more testing to see where the levels are now, but I've been really busy. The tank is doing great, though, so I haven't really been in too big of a hurry.

I'm glad that you found this thread useful.

Good luck with your set-up.

Andy
 
#69 ·
Hehehe...so after I did your percentage calculations, I only had a 250ml bottle to use, so I had to divide by 4...more calculations! ;)

Thank you again. I was able to mix 3 of the ingredients. I am waiting on KH2PO4 which I had to order, and then also the CSM+B in it's own container.

Do you find that you have enough iron with what's in the CSM+B?