After reading this {and being a noob who's still collecting the necessaries} I went to eBay and ordered these meters.omega7 said:Go on ebay and get a tds meter and ph pen for 46.00usd including shipping. "thesilvergenie" has them both for cheap. I think thats the company name though not sure if its the user id as well. shouldnt be hard to find. here you go. http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=20756&item=4312399512&rd=1
and
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=294&item=5709605227
the ph pen is a little pricey, but together they are a deal cause this guy has pretty cheap shipping plus with both purchased one is shipped free. They arent the best, but they arte the best for the price. They will make measuring nutes and PH way way easier.