Cannabis enjoys water, but not swimming. The biggest mistake is watering too frequently. Wait until the soil is dry on the top inch, and then water until you have a fifth runoff. Cannabis likes the ph of its roots to be between 6 – 7, and in hydro between 5.5 – 6.5. Test your water, and adjust it every time if needed. Nutrients only need to be added to your water once out of every 2 or 3 feedings.
Water and electricity don’t mix. Keep wiring up and tied out of the way.
Standing water causes mold. Always use drain trays; never leave standing water.