Could someone give me a quick review and sanity check on my game plan to reconstitute my RO water, please. I just used the last of my RO Right and luckily received my Greg Watson order. I’m going to attempt the dry fertilizer route. The searches on this which I did find all mentioned using either Kent’s RO Right or Seachem’s Equilibrium and if I understand the chemistry correctly I should be able to reconstitute fully from Greg’s products for a lot less $$. Here’s what I have:
1 lb- KN03
This is for my 135 gal (see signature) which just last weekend I set up and did the initial “light” planting. I have a couple of pictures and am going to start a journal in the photo album soon as I can start hosting the images. I’m planning on doing 40gal (~30%) weekly water changes from 100% RO water mixed below. I am that small % that have to use RO. Most of this info was compiled from Chucks Calc., Rex’s site, and many many postings.
To 40 gallons mix:
2 tsp MgSO4......7.08 ppm......Mg......5-10ppm
½ tsp KNO3.......11.57ppm...Nitrat..... 0-20ppm
........... also....... 7.18ppm.....K........10-20ppm
½ tsp K2SO4........ 8.33ppm.....K........10-20ppm
¼ tsp CSM+B.......(.1ppm).....Fe........(.1-.2ppm) (plus additional trace’s)
I found a thread mentioning 1/16 tsp of CSM would increase Fe in 10gal by .1ppm so I multiplied it up to 40gal for my situation and Fe seems to be the popular trace mineral for tracking and measuring reference.
This will eventually host adult Discus so I plan on keeping the GH and KH both at 5dh (kind of soft). I’ll mix this concoction up and will test the KH and GH and add the appropriate amounts of NAHCO3, CACL2, or CACO3 to bring them both up to 5. I wouldn’t expect it to take to much NAHCO3 with the mg ions already present, maybe a little more carbonate however. Chemistry wasn’t my strong point so I can’t figure out the moles, weights and ratios to mathematically work this out beforehand so I’ll resort to the old fashion keep adding a little more and testing till I hit the mark methodology…lol From all I’ve read on reconstituting water, macro and micro nutrient requirements, this should work and provide my baseline for water change day in my dosing schedule.
Do you see any glaring holes here, I hope I'm pretty much on track? TIA
BTW – The algae has started sprouting all over and I believe I don’t have enough “fast growing stem plants” to out compete. I stumbled across a few threads discussing the initial cycling and new tank syndromes and just realized I don’t have nearly enough plants to start out with…I guess off to the store tomorrow
Oh, I also have a gram scale on order and will convert all tsp. reference to grams when it arrives.