no i cant wipe it off
also the redish stem you have at the bottom means you need more nitrogen... get some nutri in that plant when its small so you wont have to deal with redish stems and light green leafs later
what if i boiled the water? and thanks for the advise. when should i give nutes? and what kind? how much? im still a hardcore noob at this growing thing. ive never had a green thumb
If your water is hard enough to show calcium stains on your plants it's definitely too hard for them out of the tap. It's probably also way off on ph. I have the same problem with my water and it nearly ruined my last grow. I had to get a RO machine to fix the problem. They're expensive but worth it. My tap water has a ph of around 5 and a ppm of 350 out of the faucet. After the RO treatment its 6.7-7.2 ph and 5 ppm.
how can i lower my ph levels?
In your water, I take it to mean..?
Vinegar... you'll have to experiment with your particular water a bit to find out how much to add to get it where you want it. pH of 6.5 is a good target.
For water that's 7.5 - 8.0, try 1/4 teaspoon per gallon for starts. Check pH and take it from there.
Just FYI, I water with my tap water at 8.0.. never been a problem. In fact, I had quite the opposite problem for awhile -- super-LOW pH from my nutes. Personally, I think pH'ing water to move it down is a waste of effort unless it's way out there, like 9-10 or more. I could go into a huge spiel on soil buffering to tell you why water pH is largely irrelevant.. I know that's heresy.