What I used for watering was a cheap submersible pump and a 1/2 inch hose and just dropped it in and used the hose. Even with 12 inches it will be a pain in the arse. Once I started using a pump with a hose I even got an old hollow broomstick and ran the tubing down it and made a wand type deal. A MUST imo if your going to scrog. Can get a cheap pump at walmart or a pet store for 10 bux and some hose. Well worth saving your back. Trust me
The battery powered pumps for changing aquariums are great for watering plants: [url]http://www.amazon.com/Aquarium-Dukshin-Operated-Submerged-Cleaning/dp/B004I5SZI2/ref=sr_1_21?s=pet-supplies&ie=UTF8&qid=1416759785&sr=1-21&keywords=battery+powered+aquarium+pump
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