When mixing the nutes with the water the water obviously is colored by the nutes. With me using GH drops to check PH I'm a bit confused. The water/nute mix is like brown/yellow, wich makes it hard to tell what PH I get. When I tested this time it said around 5, but now I'm a bit worried that the coloration from the nutes are making me unable to check it this way. PH from the tap is still around 8, can nutes really lower it that far down?
http://www.ebay.co.uk/itm/New-Digit..._Measurement_Equipment_ET&hash=item415ed3220c
Is this one decent? Very cheap...