What should the readings be in a Tower Garden?
Generally, readings should be approximately 1500-1800 ppm . In the summer months reduce this to approximately 1000-1500 ppm. “Why lower in the summer?” you may ask. Because the water evaporates and the minerals do not. Having too much tonic can be just as bad as not enough, especially in the heat! Learn more here…
How much does a TDS Meter Cost?
TDS Meters range in price from $15 up to a few hundred dollars for top of the line commercial units! The one I own and use for our Towers at home cost approximately $22 and can be found here on Amazon. This one measures the ppm and the temperature.
How do I use it?
All meters are slightly different but do the same thing. They will need to be calibrated here. As you are testing for water around the 1000ppm range you will want to purchase calibrating fluid that is 1000ppm. Check the guide for your meter for more information on the specific fluid to purchase.
Over time and you will need to purchase calibrating fluids. They are usually less than $10
NOTE: Be sure to check your pH AFTER adding minerals. The minerals are acidic and will lower the pH.
Still don’t own a Tower Garden yet?
You can purchase one here.