Reddit mentions of Realgoal TDS Meter TDS-3 Blue Water Quality Tester 0-9990 ppm Tester Handheld Temperature TDS Testing For Drinking Water, Pools, Aquariums, Ponds etc. With Leather Case (PACK OF 3)

> i basically just need a light and thats it? if i want to grow autoflower only

oh boi... alright here we go.

youll need duct fans for both ventilation and heat dissipation, especially if you go with HPS/MH lights 600/1000watts will require reflectors with ducting so you can connect to it. This will need to exhaust out of your tent. Then you will need a intake fan coming preferably from outside. Youll most likely also need a Carbon filter attached in series to your exhaust fan. Your light will have a ballast as well, which creates a good amount of heat so plan for that to be located outside your tent. Youll also need smaller fans in the corners so you can keep a good air circulation going (hurricane fans are great). Also consider using T5 lights when starting your seeds off as your higher wattage lights are not good for seedlings. Also get a few supplies like gorilla tape and duct clamps and anything else you might need to secure everything together.

When it comes to growing, even if you are only doing autos youll need smart pots, fertilizer, promix HP, perlite plus both vegging and flowering nutrients. Have access to PH up and down solution, and also get a Ph Pen + PPM meter (TDS).

Ive only linked amazon, there are probably other local options for you.

Realgoal TDS-3Blue Water Quality TDS Tester Handheld Portable Pen ATC Meter 0-9990 ppm Range 1 ppm Resolution +/- 2% Accuracy for Testing Hydroponics Gardening Aquariums Reefs Pools Spas Water Treatment Drinking Pure Filter system https://www.amazon.ca/dp/B01FXRB6KM/ref=cm_sw_r_cp_api_i_DcfXDbPPA23WH, that is the meter I have

I use this one, works great :)

https://www.amazon.ca/Realgoal-TDS-3Blue-Resolution-Hydroponics-Gardening/dp/B01FXRB6KM/