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Journal Joel Armstrong - My journey

Trying to understand what the clay breaker may have done in the tank, but I am not a chemist and may be wrong here.

Clay Breaker seems to consist (mainly) of gypsum, CaSO4.2H2O, and for a gardening product probably some unknowns as well. Gypsum has a solubility of 2530 mg/L at 25C. Now we don't know how fast gypsum goes in solution, the time factor, but it looks like Ca and SO4 in excess of 2000 ppm would be a possibility?

Am I getting it wrong here?

EDIT: I am probably getting it wrong, because I guess I should have calculated the molar masses for a correct ppm estimation.
 
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Good move imo. Those diatoms coming back like Terminator bots made it impossible to have much success. Sometimes you just gotta burn it all down and start over

Trying to understand what the clay breaker may have done in the tank, but I am not a chemist and may be wrong here.

Clay Breaker seems to consist (mainly) of gypsum, CaSO4.2H2O, and for a gardening product probably some unknowns as well. Gypsum has a solubility of 2530 mg/L at 25C. Now we don't know how fast gypsum goes in solution, the time factor, but it looks like Ca and SO4 in excess of 2000 ppm would be a possibility?

Am I getting it wrong here?

I believe the million dollar question is what caused the diatoms. Most of the literature names silicates as the main culprit, and it might be in some instances (maybe even this one because we dont know what else mightve been in the claybreaker)

What we know is that new tanks seem to get it, and then it disappears as things mature. To me this implies theres more to it than just silicates being present or not

I wonder if something in the claybreaker prevented normal healthy microorganisms from establishing. Could be the very high concentration Ca and SO4 in the sub, or something else entirely.

Im inclined to believe it was preventing something beneficial from happening rather than just feeding diatoms. Could be totally wrong about that. Its an interesting situation for sure
 
I see it online, but when I click on the link, I get this

Well shoot. My page loads differently because my browser senses I'm out of Australia Zone.. maybe that link is for international offerings..

Do you get the same error for the Harsco Coal Slag link on the Slag Abrasives page?
 
My page loads differently because my browser senses I'm out of Australia Zone
I thought the same.

Do you get the same error for the Harsco Coal Slag link on the Slag Abrasives page?
Yeah, I do.. same error page..... stupid Australia!!
 
Looks great man! Can’t wait for it to grow in problem free for you.

Cheers mate,

Hopefully I start enjoying the hobby again
This looks amazing @Joel Armstrong . Wishing you lots of healthy plant growth, and hopefully never look back at the diatoms.
I'm sill a bit scarred and don't even like saying or looking at that word that starts with "D"
 
@Joel Armstrong it looks fantastic! Well done, man!
Thank you for your encouraging feedback 😊

I've changed my approach a little, based on Joe's advice regarding water change % and dosing regime. I'm currently doing 55% water changes weekly and dosing 22.5 ppm NO3, 7.5ppm PO4 and 30ppm K in between water changes. Half being dosed on water change day, and the other half split into 2 doses throughout the week.
Using Joe's micros at his recommended amounts of 2ml per 10 gallons, 3 x per week.
 

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