Ahhh. Gotcha. I’m not running a drain to waste hydro set up. I was just manually watering plants.. So can I still just mix it up and pour it in like regular liquid nutrients? Or do I have to set it up as a run to waste? I have them sprouted in the solo cups. All I have those is 5gal fabric pots. Think that will still be ok? Or should I go buy some 3 gallon?
Hand watering is fine, but you do want to water it until there is some drainage, preferably 10-15% of the total volume watered. Be careful not to water too frequently though. Water only when needed until there is plenty of root mass, but always water to drain to avoid any salt buildup. Once your plant is full rooted you can start with the daily waterings, but if you water too frequently before they are well rooted, you will only slow things down and lead to a less than pristine root zone.
You may need a container size between solo cups and 5 gallon pots. I personally go solo cup, to 1-1.5 gal to 5 gal though with care, you could go straight from solo to 5 gal.
Get yourself a ph and ppm meter asap. Figure out the level your base water is, if under 100 ppm or .2 ec, you may want to snag a bottle of calmag. You will likely only need 2-3 ml of your A and B per gallon for little seedlings and up to maybe 6-7 ml per gallon when fully vegged. I aways read about people using waaaay more canna nutrients but I keep perfectly happy plants in coco without ever exceeding 600 ppm.
If you are going to be using canna products (which I can personally endorse) only other product you MAY want to use is some Rhizotonic. It’s a great rooting supplement that can be used a bit lightly and still benefit greatly from. While I use their whole coco lineup, I will say Boost is very expensive for a new grower who is still learning. Cannazym is fairly cheap and also a solid product, but isn’t really that helpful until flower.