How to lower the PH of water.

Duck is right as always.

Lemon juice has lots of sugar in it.

If your application doent matter, fine but you will feed bacteria and some fungus that likes the particular ph you end up with.

MrEDuck said:

Lemon juice gives food for bacteria.
pH down is what you want. Believe it or not acids are naturally occurring. Dilute sulfuric or phosphoric or nitric acids are your best bet.

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can i use some lemon juice + AN Tarantula and some pine honey? only for germination ?