haha hi guys thanks for the reply's.
Been a bit busy lately, not had time to reply.
They are close together the pots, but they only veg for a week and only go as high as the top net.
We got just over 2z per plant, one 600w light covers 9.5 plants.
Since we only visit once every 12 to 14 days if one plant got spider mites even if we have spread them they all would have got the mites, touch wood not got any yet.
Root rot would spread with less plants the same as it would with more, the water is flowing really fast down the rows and back into the tank at the back where it is being mixed up with aquarium wave makers and there's 2 venturis in that tank + air stones + the water when it returns into the tank is connected to pipe that has 7ml holes in it and the pipe shape is similar the shape of a digital number 8. Then the water is pumped back into the pots through the white pipes where it is forced through a 5ml hole into the tank creating a flooming effect in every pot. In other words that waters moving around so fast that it could be anywhere in the system within 5mins I suspect.
The pic is from the first run some things have changed we have increased the water flow considerably as our oxygen meter started showing dissolved oxygen levels of 6.4 - 7.2 towards the end, we put this mainly to an explosion of beneficial bacteria ( we dosed to high in the beginning).
there's a lot you can't see in that picture alone, for example there is 18 fans ranging from oscillating fans on the walls to free standing fans under the tables moving air in the room.
On top of that we have into total 12 RVK fans doing varying jobs such as 3 12" used on 3 carbon filters 2 12" used on intakes and the other 6 are used to cool down air before it exits (some is brought back into the room ) the building to below outside temperature. As its winter the room can be brought down to 15c that's with 17 lights 5 water chiller and 20+bits and bobs causing heat all in the same room. Without putting fans on more then 50% power.
Water temp ranges from 18c to 20c, major problem we realised was if you lift the net pots up when your high and you watch a shit load of pebbles fall into the water and you've been working in the room for a few hours and decide fuck it and just place the net pot back thinking the pebbles float anyway, you will come back to a shit load of work. lol
Other then it being difficult to judge nutrients and over doing it a bit its been okay, we usually go with autopot systems and in that same room we had autopot with dwc we increased yield by 40% but that's mainly due to the fact autopots valves clog up and plants die
We also have a RO 6 stage water filter which fills up a tank you can see in the pic as its in separate room, then once that tanks full a float switch in another tank that you also cant see in the above pic activates when water drops in said tank. This activates the pump in the ro tank which then pumps water to the other tank, that tank tops up the tank at the back of the room when the water level drops, this tank also hold a nutrient mixture which enables us to not vist often.
The problem is it takes 5 days minimum with a 550 liter per day filter to make enough water to fill the entire system also the waste water from the system is very high. That's something we are going to change.
Ok I wrote a story lol.
Any feedback would be nice.
Thanks
