Calcium hypochlorite rates?

Dboi87

Well-Known Member
I'm not sure where to post this. Please move it if there is a better location.

I keep reading all over multiple forums that a solid way to keep your reservoir clean, is by using calcium hypochlorite.

The recipe says to make a stock solution of 1g to one gallon of water. The stock solution is then mixed at 6ml/gal (or 1fl oz for 5 gallons).

That breaks down to 0.0015625 grams per gallon.

However, looking around camping and survival forums, the same calcium hypochlorite is used to treat water in an emergency to make sure it is safe for human consumption.

The recipe for the drinking water says to make a stock solution of 7g of the calcium hypochlorite to 2 gallons of water. That stock is then mix at a ratio of 1:100 stock solution to water.

That breaks down to .035g per gallon.

That means the concentration of calcium hypochlorite is 22.4 times stronger for drinking water than it takes to keep your reservoir clean...

This doesn't seem to add up to me. Can the reservoir concentration possibly be enough?

Does anyone have any actual experience with the reservoir solution and rate recommendations based on real life experience?
 
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ShirkGoldbrick

Active Member
I used an ORP meter to measure the water while using calcium hypochlorite and an automated injection system to keep ORP ~600. The plants didn't fare well. The chlorine binds with the ammonium in the nutrient solution and the system ends up continuing to dose more chlorine and you get chlorine toxicity. Will work for a cloner if you're not using any nutes..but my experience you get roots faster and healthier plants with nutes - real agriculturists use nutes too.

If you want to use chlorine then use chlorine dioxide, it doesn't bind with ammonium and it penetrates biofilms. You can get it in tablet form of ~10% purity from aliexpress. Note: I haven't tried it. It's what greenhouses use though, albeit they use an on site generator. My previous calculations showed ~$200 for a 6-7 month supply to treat a 50 gallon reservoir if the useage was similar to what I was dosing with calcium hypochlorite.
 

ShirkGoldbrick

Active Member
FWIW, I'm actually running beneficials now. At first I was dosing the bacteria by themselves to ensure there was no extra nasties I didn't want that got in the tea brew, but on Friday I brewed a tea and have experienced no negative effects from foliar and reservoir addition.

My recipe:
-1/4 tsp zho (only if you're going to foliar too - should double check but I'm not even sure if trichoderma and mychorrhizae are beneficial in foliar..they just wont really reproduce in a short brewed tea)
- 30mL aquashield
- 1 teaspoon ogbiowar foliar
-1 teaspoon ogbiowar root
-1 teaspoon molasses
- 2 gallons RO water

bubbled for 4 hours, let sit a few minutes for talc and clay to settle to bottom and then use. This is a mix between richyrich/eisenbergs tea and the brew instructions for ogbiowar. I wanted to do a short brew to ensure maximum bacterial diversity. I didn't use EWC tea or ancient forest because I have no idea what species are present in those and I don't want to invite any unwelcome visitors.

I dose zho and pondzyme into the reservoir per product instructions.

I have used 10mL/gallon of aquashield to beat the slime. Eventually your reservoir may smell like chicken shit (my cloner does).

Since I use no media I have thought about adding a tea bag in the net pot filled with xtreme mycos spores in order to allow them to colonize (with the exception of it appears zho - myco spores need actual physical root contact to germinate) faster. Next time.
 
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