DWC Reservoir Change

[Munkey]

Hello All. I have 2 seedlings almost 3 weeks old growing in 2 separate 5 gal. bucket DWC systems. Both of their root systems are right at / just in the reservoir nutrient solution. I use the GH Flora nutes currently at seedling strength as per manufacturers recommendation. My question is when would be the proper time to begin the weekly / bi weekly reservoir change? Seedlings are nice and healthy. Thanks for any and all input.

[RosettaStoned]

How long have they been in the current solution?

[Munkey]

I started them in the net pots and their roots have just now reached the solution which I mixed up when I started my air pump about 3 weeks ago. I have been hand watering them during that time with a 1/4 strength seedling solution.....

[RosettaStoned]

I would change it out. I never go longer than 2 weeks or when I replace 2/3 of the reservoir solution, which ever comes first. Later on you want to go only about a week, eight days max.
if you haven't read http://www.growweedeasy.com/high-yie...nics-technique .....do it.

[DW2]

Howdy Munkey, Even in the seedling stage it is important to keep the nutrients changed out regularly. I follow the GH feeding schedule (RDWC for Maxi series) and it has worked well for me. The regular changing out of the nutrient mix, as well as the mid feed topping off with plain pH'ed water, will help to prevent 'salts' from building up and causing damage to the plants especially in the early stages of growth.

[Munkey]

Thank you DW2, great advice!

[Munkey]

Thanks guys, makes perfect sense. I appreciate the advice. I will have more questions as this is my first hydro grow.

[alltatup]

Hi Munkey, Just one more suggestion from a fellow hydro grower: Prepare your new water/nutes and have it ready to pour right in after you drain the old water. Especially when roots are very young, they don't like much excitement at all, so I get in and get out as fast as I can.

[gbauto]

I tend to stick with a 10 day cycle-makes it easier to do it on the 10th, 20th and end of the month.

[Munkey]

Thanks alltatup and gbauto. I did premix everything and did the Quick Draw McGraw change out. That was hours ago and they haven’t keeled over yet so I think I’m good......

[alltatup]

Good job, Munkey!! The fact that they didn't keel over is a very good sign!! ;-}

[Munkey]

My girls, 2 1/2 weeks old, I can’t thank you guys enough.....

[BlueBudz]

Looking good Munkey, I would suggest covering that orange plug with something to block light. Maybe even use some black tape on that air line. Light in that reservoir is a big problem. Just my 2 cents

[alltatup]

What he said!!! Keep ALL LIGHT out of reservoir!!!!

[Munkey]

Duly noted guys, thank you!