First of all, would like to say, this is my first post in the forums. I am a completely new grower and have never grown anything. I live in MA, and we have recently approved recreational marijuana use, which includes growing. I have been watching a ton of videos on YouTube and reading through forums and grow journals. I also have some friends and family that started growing a while back, which peaked my interest even further. I have decided to go with DWC for my first grow. I hope I’m not being overly ambitious, but I wanted to go with a grow style that someone I know is using so I can talk to someone directly when questions arise.
Now, to get on with my question! I wanted to find out if my tap water would be in a reasonable range to grow with. I dont have much money to start this up, and I’m trying to save as much as I can, with everything. I purchased a $10-$15 PPM meter and PH meter combo online, and they should be arriving shortly. Neither meter came with a calibration solution, and what I need to know is, can I trust these tools to be correctly calibrated out of the box? I just want to check the PPM and PH of my tap water, but need to know if I have to go out and spend more money on the solutions, or if I can just use them?