Aquaponic Gardening

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Good day all,

I'm trying to figure out what ratio I should add Bromothymol blue : water to test pH...

2drops Blue : 2ml water?... or more water? Google gives no definitive answer pertaining to aquaculture or in this case AP. Results I found varies between 2ml to up to as much as half a cup

Hope someone can advise please

Thanx in advance

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It seems most people use the Strips and not the old school drops?

Braam, I use the API Fresh Water Master Test Kit.  I have no idea what solution it uses for normal Ph, but the ratio is 3 drops for 5ml.

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