...i think you'll like regaining all that vertical space.
...while you can water your hempy's every other day, some even go every third day, you'll get the best results with daily waterings once the roots hit the bottom res because each time you water you also replenish all the oxygen in the rhizosphere, aka the rootzone, lol, sorry, i don't mean to sound pedantic.
...anyway, no, i water twice daily because i run 2 bloom spaces, a tent and a closet of approx. the same 4 x 4 dimensions, ...so each gets watered once daily.
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...the T number denotes the diameter of the bulb so a T5 is .5 inch's in diameter and a T12 is 1.2 inch's in diameter, ...the T5's are supposed to be more powerful but they are also WAY more expensive and the T12's work just fine.
...i use the coco bricks,
General Hydroponics and
Advanced Nutrients both have coco bricks that are available on Amazon for small money, somewhere between $9.00 and $15.00 per brick and a brick will expand enough to make several gallons of media, way more than you'd expect.
...there are many coco options out there and many swear by particular brands but i'm not so particular and i've been using the bricks, without any rinsing, for close to 3 years now with absolutely no issues.
...i don't like to discourage new people from asking questions but i always try to make the point that while this is new to you, it ain't new so any question you can think to ask has already been asked many times and in my opinion you will find more reliable information faster if you learn to hunt for answers rather than just waiting for them. ...and you're not new exactly, just new to hempy style so while i don't mind answering yor questions i'd still suggest you not take anything i say as gospel, trust but verify everything because any one of us can be wrong, ...actually, i thought i was wrong once, but i was mistaken, lol.
peace, bozo