sodium bisulphate

[smokingjoe]

Is it safe to use Sodium Bisulphate readily available in pool shops to reduce res pH?

 

[leafminer]

sodium bisulphate is a salt, not an acid or base. Use an acid if you want pH to go down. Hydrochloric acid is the most usual. Phosphoric acid works and also adds phosphorus giving great bloom growth. Be careful to monitor pH properly...

 

[Lemmongrass]

hcl is an acid to deff nto use. all it is is chlorine gass bubbles disolved in water. so when you add water, the ph goes down but you cl level blows WAY up and hurts the plants. no salt or halogen based acids. also not acids that are gas. such as carbonic acid. as this ill all just evap out. it also delivers co2 gas to your roots which is toxic. citric and absorbic acid is not stable in a dirt environment and breaks down in a few hours to a few days. this means you will get a massive pH swing which is worse than a constant high pH. so no lemon juice. vinegar breaks down too.

 

[smokingjoe]

sodium bisulphate is a salt, not an acid or base. Use an acid if you want pH to go down. Hydrochloric acid is the most usual. Phosphoric acid works and also adds phosphorus giving great bloom growth. Be careful to monitor pH properly...

Why is it then marketed as a dry acid?

 

[Lemmongrass]

because when mixed with water it is one,but its just not the right type for growing. all salts are bad for you roots, so is a salt based acid

 

[smokingjoe]

thanks