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View Full Version : using pps tds meter


sc0usa
08-31-2004, 05:20 PM
can ne1 please tell me what my tds reading should be,ive just got a meter and its reading 168,dont know if thats right for 4 week old plants.

cheers guys
taphead
09-01-2004, 04:25 AM
do you mean your tapwater reads 168 or your solution reads 168?
sc0usa
09-01-2004, 11:40 AM
its 490 now from my tank,tap water is about 180 with the meter
cheers m8