O btw do i need to order the calibration liquid?
Well dude. I would. It's a few $ and it will last, and keep your meter correct, AND your already getting stuff shipped.
That being said, I never actually bought calibration fluid... I've used my meter for a few months with no calibration. It used to take a minute to get a solid readout, now it has to sit in the water for like 4-5 minutes before I can get an accurate read.
It takes a super small amount of calibration fluid to calibrate it. Also, I hear you
should use storage solution for a pH meter. The guy at my hydro store says he keeps a small little sliver of a wet sponge in the pH meter cap (no storage soluton) but some people here said you shouldn't do that.
What I think is that you
should use the storage solution for pH meters if you want to take good care of them. Nice meters are between $100 and like $300, those (imo) are the ones you want to take care of. People use those for really nice hydroponic grows, a simple meter will suffice for a small soil grow
. Now a $25 meter? To me that's not a lot of money so I wouldn't worry too much about taking the best possible care of it.
Also, I keep forgetting your running auto flower. I want to withdraw my remark about them looking tiny, I've never ran an autoflower so thats probably why they look small to me.