I'm keen to try for my upcoming tank project. Seems I need to use only 2 dosing pump instead of a few for fertilisation.
Hello Plant Enthusiasts,
For Normal PPS Pro dosing: to 1L:
K2SO4 59g
KNO3 65g
KH2PO4 6g
MgSO4 41g
dose 1ml of this solution per 10 gallons daily.
Main Benefit of PPS Pro:
unlike EI, we do not need to do troublesome 50% water changes after every week.
The main point of my post is:
Anyone tried dosing Singapore Style PPS Pro?
I've been googling the net for PPS Pro dosing without KNO3, but I simply cannot find any! Well, thats why I'm here to seek enlightenment.
Due to the ban of KNO3, do can we substitute it with Ca(NO3)2.4H20?
However, if we take away KNO3, K2SO4 have to be increased since KNO3 provides some K too.
Yes, the amounts would have to be changed! But by how much?
And can we add all the dry ferts together? Surely precipitation would occur when one adds calcium nitrate to potassium dihydrogen phosphate! We should instead have 2 solutions?
From my mole calculations using the standard model of PPS with substitutions taken into account,
Solution A: in 1L
KH2PO4 6g
K2SO4 115g
MgSO4.7H20 41g
Solution B:
Ca(NO3)2.4H20 76g
dose 1ml/day/10gallons
and of course your trace elements solution like Flourish Comprehensive or Lush Gro Range of Trace Elements?
Any PPS-Pro pros here on AQ keen to give advice?
I'm keen to try for my upcoming tank project. Seems I need to use only 2 dosing pump instead of a few for fertilisation.
Sorry i just realized the post i had posted had a lot of incorrect info. My apologies.
Taking it down because of chemical calculation issues.
Note that precipitate formed is mainly calcium phosphate though. It is possible to sieve it away, KNO3 will still remain in aqueous solution.
If precipitate is monocalcium phosphate which i think it could be, i think it's not an issue as you'll be getting 5.1g of it. Up to 20g can be dissolved into 1 litre of H2O
Last edited by ken90ken; 17th Mar 2013 at 11:24. Reason: Clearing of Incorrect info.
EI doesn't require you to change water weekly. It's just how you get a good nutrient level without messing with measuring your nutrient levels. I believe the main difference between EI and PPS is the target nutrient levels in the water, EI is higher in that respect. There's nothing stopping anyone from dosing lower levels of EI and changing water say once per fortnight. However by starting with a higher nutrient level and working downwards, that's better than trying to work upwards.
There's nothing stopping you from making a stock solution with EI too... A lot if calculators out there that can help you with that.
If one wants less work, I think the best way is to go with lower lighting levels, then you'd need to dose less and maybe not have to mess with co2
EI without weekly watet changes sound like a really bad idea. Are you able to provide more information on the aquarium that you planning to does PPS Pro? Flora, substrate, lighting, CO2 injection will be a good start.
You referring to me or the TS? Anyway I'm setting up a 2.5ft high, 250L tank using LEDs, PH controller for Co2 injection, Chiller and the works for my setup. Basically high light/tech/maintenance tank.
This PPS Pro method, if work, could ease my tank fertilization regime.
Will create my thread on that later in DIY section.
I'm referring to li_gangyi, he mentioned EI without weekly routine water chances. As you mentioned, with all the works for your planted aquaria, I will simply go the EI way as it's a proven fertiliser regime with ample literature on how to execute it properly.
I recommend regular water change regardless what dosing method you are doing. It not necessary to be weekly, can be done monthly. Not doing water change is like you are lock in the room without toilet, you eat, sleep, pee and poo in the same room . Just imagine . Another benefit of regular water change is for algae control, water change help reduce detritus in the water.
Without weekly water change, you're going to have way too much fertiliser in the water column that won't be taken up by the plants. Algae takes advantage, takes over and you get the idea. I suggest anyone who wants to start EI dosing to google on 'Thomas Barr Estimative Index'. You won't go wrong reading literature by the creator of EI himself and that at the same time, dispel any questions and doubts over issue such water change regime as discussed now.
Have you try Diana Walstad method before? If you do, you might realize it is not as easy as it look. Balancing between the number of fishes, fish food, plants and light will give you different kind of challenge.
Well put indeed Robert. True to your statement, Walstad NPT method do provide another set of challenges. I do get what you'll trying to bring across. For now, I'm running Excel (double daily dose) supplemented planted aquarias and a whole set of fertiliser regime put together by a hobbyist that essentially compiled the findings and recommendations of Mr Thomas Barr. I'm using these very effectively and strange as it may sound, my plants 'pearl' on a daily basis during photo period
pps dosing not many people try and succeed in singapore, regards to water change. Good to reset it every now and then, imbalanced high tech tank = algae.
Speaking of just no water change, peiho are you deciding to use a fan to chill the tank? that will increase the fert levels even higher & faster.
Walstad method need your well balanced, eco system to be a "maintenance free" tank.
As Shadow mentioned, it's a different kind of challenge. IMHO not so high tech balance might not be fitting if you have itchy fingers illness.
Learning the hardway, not the highway.
Photo Blog - impervious-endeavors.blogspot.com
Semi-Active currently
"if he cant be bothered to take the time to write his question properly, why should I take the time to answer him."
Bookmarks