how much should i dilute pool shock

rkymtnman

Well-Known Member
well im only using a 30 letter rez or like 8 gallon. its only a single bucket.
have you thought of trying something like UC roots? it's pre-made, ready to add. not to turn you off pool shock, you won't find anything cheaper. and chlorine is a nutrient used by cannabis. i personally would spend $30 for a more accurate scale if you do end up using it.
 

memoponics

Active Member
What i came up with was, at your scale resolution you are looking at 0.2g for 8 gallons to get 5ppm. I'll give you a break down:

1ppm=1mg/L
1gallon = 3.78541 L
8 gallons x 3.78541 liters per gallon = 30.28328L

Your shock is 73% calcium hypochlorite which equates to only 70% free chlorine, or in other words, there is only 0.7grams of free chlorine per gram of pool shock. You basically have to increase the dosage amount by 30% to make up for the difference:

5ppm x 1.3 = 6.5mg/L

30.28328L x 6.5mg = 196.84132mg

196.84132mg ÷ 1000mg/g = 0.19684132g

Even with 0.01g scale resolution, you still end up needing to round it to 0.20g
 

memoponics

Active Member
Op you may find it easier or more convenient to do the ClearRez recipe. Some people are intimidated by dosing straight shock into their mix but i assure you its legit and it works great, especially if you regularly combat high water temps.

Caveat: the smaller the volume of water you are dosing, the more accurate you should be. Smaller variations affect smaller volumes more significantly. Conversely, the more water volume you have, the more wiggle room you have on your dose, because a small variation will affect it less. Always thoroughly dissolve the shock in water before adding it to your mix, i recommend using warm water to help dissolve faster.

That being said, the plants can tolerate a slightly higher dosage without ill effects if it isnt sustained. Remember also that free chlorine also evaporates out of the solution over a fairly short period of time so after a day or so theres no free chlorine anymore anyway. Now the chlorine that ends up reacting with organic materials is still in there however and is no longer doing anything positive, and if its a lot or it accumulates it can end up screwing with your chemistry. If you are only treating a bad root rot problem you may want to flush your system after a day or so but if you use this as a regular preventative measure it should be minimal.
 
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