Can I use this ppm meter for hydroponics?

Saw this on ebay
http://cgi.ebay.com/HM-Digital-TDS-EZ-Meter-Tester-Water-ppm-Purity-Filter_W0QQitemZ280349439863QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item414620f777

Can I use that for hydroponics too?

mpdegn said:

Saw this on ebay
http://cgi.ebay.com/HM-Digital-TDS-EZ-Meter-Tester-Water-ppm-Purity-Filter_W0QQitemZ280349439863QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item414620f777

Can I use that for hydroponics too?

Click to expand...

I bought one of those cheapies about a year and a half ago off of ebay, though it was a different brand. I do daily adjustments in my DWC, still works great, my girls have never complained. If it ever breaks I'll buy one of them expensive all in one PPM/TDS/EC/pH/Temp meters.