thank you NukaKola i got a small pump. my idea now that you say the key to coco is multiple feeds a day is to buy an extra bucket say 20 litre and use that as a small bowser to mix my water and nutrients in. at the side of the tent run some thin pipe off the pump around the 4 pots and maybe put some dripper pegs in the pipeing and drip feed the plants a few times a day when the bowser empty's. or do you think i be better off watering by hand for say the first month maybe five weeks. then putting them on a dripper system when the roots spread a bit. thing is I've not grown in years and then that was only in soil so in coco I've read the roots spread a lot quicker. so I'm not sure how long to veg for in the buckets before putting them into flower.
I don’t use drip emitters as they clog easily from salts/minerals.
I connect an adjustable flow manifold to the submersible pump with PVC and run 1/4 micro tubing from the manifold straight to the plants and add a barbed T at the end just to spread the water a bit more evenly.
I turn on the pump and time how long it takes to get 10-20% runoff and program my timer accordingly.
If you just planted seeds or transplanted you can hand water for a while. You can tell when your roots are established and the plant wants to drink more than once a day.
The adjustable flow manifolds are nice since you can adjust the output to each individual plant. I also run an air pump to my res for more dissolved oxygen.