changing PH in coco/perlite mix

[ktm250]

I have just repotted 3 one inch and 1 two inch seedlings from potting mix to coco/perlite mix 70%/30% after the seedlings were not growing and have been in for 19 days now.They have been under 250watt MH and yesterday i put in my 250watt HPS.I have good intake and outake fans.

I have a cheapo PH tester that measures wetness of medium,light and the PH.After transplanting them into coco/perlite i tested the PH and it reads just past 7PH.What can i use to lower it? As i believe around 5.2 to 6.5PH is right for growing cannabis.I have read some people water in vinegar into the medium but thats usually soil not coco/perlite and other people say coffee grounds but then other people say not to use it.So i have mixed information and im stuck hehe.

What is the best for coco/perlite?

Also i washed the coco and parlite before i transplanted my babys.

[Ex.]

it should be about 5.8 ideal. 5.5-6.2 is the range u want to be in.

 

you need to flush your plants with water that is the correct ph. you can get mixtures called ph up and ph down from hydro suppliers that will help you to adjust the pH of the water you are using. as long as the water is of good ph (after nutes are added) and you don't let it build up in the soil too much (flush every few weeks) you will keep it under control.

 

after the flush go easy on the nutes too, you probably shouldn't be giving them more than 5-10% of the regular amount at this stage.

[TD.]

i believe around 5.2 to 6.5PH is right for growing cannabis.

 

 

growing cannabis ? who would do such a thing ? this is a rose growing and information site

**mumbles under breath** 5.8ph