lmao 344 plants, not 345 then? what are you doing exactly, a field of sog?
that DEF wont cut it. 344 is a stupid ridiculous number of plants, have fun watering!!
I used to run a gigrow...3 cyles... and a roto grow..omega. i had the 240. unit........ it works well...run to waist..just make sure the nutes tank is all setup and the driper cluster thing that goes to the tubes doesnt clog...we ended up making our own by 1 inch poly line and Ts with 1/2 gallon drippers and run one at every spot.... pm me an ill tell you all about it.. hope you know how to use rock wool and you are more comfortable working with it then being naked infront of your gf kinda thing..if u get my drift....
but what i did is created a mini stadium out of a 600 watt bulb and no reflector...set the plants in 3 to 4 shelfs 4 plants per..shelfs so 48 plants. total we used a 4 run patio stair starter..what u use to make stairs with... so your looking at cutting thoses 48 plants down to 350 sets of clones..thats only 6 to 7 clones ..thats easy..i was getting 10 clones per plant..or the other way is get a 1000 watt.. and 20 to 30 plants...tie the tops down and super crop them to get the clones you need..but using only 5 mother plants your going to be waiting a month or more ot get them big enough and even then they will be shit clones cus your using the inter canopy for clones..u want the ones on the outside..thats why using a lot of smaller plants and vegging them out is better... time is money...pcccc
hate to brake it too you buddy. the gi grow is a cool system..HOWEVER .if its your first time doing hydro..the gr grow is not the system u learn on..u better be knowing what the fuck your doing first..and that u havent worked with rockwool....hm....ever herd of up a creek no paddle..? it took me at least one session to get it right..but i have been doing hydro for years..and yr dealling with a shit ton of plants..i dont think u know what your getting your self into..yr just seeing the $ signs... in theory yes,,, real world ..no...i i would seek somone thats local that knows hydro befor u imbark on your quest... because u will get a little ways and then shit will hit the fan u wull be out time and money... for your first time hydro..i would start practicing on a 4 by 8 flood table with rockwool ..and use drippers . or ebb and flow... learn how to grow this and then go to the gi grow..also the 4 by 8 flood table will act as your veg area for your clones just befor your ready to put them in the gi grow... or as my gf use to say the " Farris wheel" goodluck