You can also get some litmus paper for cheap at the pharmacy...it will give you ph results...but those the most easiest to read and judge.

A milwaukee ph pen can be had on ebay for about $22. It's not water proof...but pretty reliable.

Drink!

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"The art of medicine consists of amusing the patient while Nature cures the disease." -Voltaire

I'll check that out. It is less than replacement parts for some of the others. Although I don't feel the need as much as I did since I found out about the dolomite lime. Thanks again.

Glad to be helping. It's what the forums are about. We can all learn from each other.

Drink!

__________________
"The art of medicine consists of amusing the patient while Nature cures the disease." -Voltaire

if the plants are already potted can you just add some lime to top of the soil and water over it? Will the watering get it down into the soil?

Yes you can. And to go a step further...try and work the lime into the top of the soil so it starts to do it's work quicker.

Drink!

__________________
"The art of medicine consists of amusing the patient while Nature cures the disease." -Voltaire

you should check out this from Earl:
CC Hydro 101 by Earl - Cannabis Culture Forums

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Grow Journals
The latest-> White Berry Big Bud/PPP PPP

i have the same test kit you do from walmart. It works for me except it only reads between 6.0-7.6. I used concentrated lemon juice and it actually worked real good and cost 75 cents for 4 ounces, dropped my ph real quick. If you got a big rez just get some ph down though. I have a 20 gallon rez and will probably just get a big bottle of ph down soon

Did you add it straight to the soil without diluting it?