Honestly the only known approved links are to amazon. Thats the only company ILGM has ‘vendorship’ or whatever with lol.
Educational, scientific links are unofficially fine because knowledge is power. Any other links I personally encourage users to break up like I did with the ‘dot’ or just take a screenshot of.
All I have to do is keep an eye on the 10:1 diluted pH down I’m using doesn’t get too low.
BTW, on lights, I have one HLG 320XL v2 rspec which goes for around $420, which (so far) has been plenty for at least two plants. This model has three led panels, but there are other models from HLG with 1, 2, 4, and more (similar or identical) panels, so there’s a big range to choose from …
I would buy lights more towards space you are looking to grow in than plant count. Someone mentioned 4x4 tent, if you go that route and want to use qb’s, I would say two 260xl kits would do that well.
Most water is fine. I enjoy knowing the numbers of said water. Ph should be between 6.3-6.8 and ppms shouldnt be over 200 if straight water. At least for me.
Distilled is awesome. As is RO. Purified is basically the same….
Rainwater is the best.
Tap works but u want to know ur numbers. Also let it sit out 24 hours to dechlorinate