Help dwc setup

[Buds4949]

Don’t know what this is but took top off of dwc today to change out water and found this
it is white color at the bottom of res wasn’t gritty just there

[gbauto]

Looks like some of the nutes may have precipitated out of solution. Make sure you mix multi-part systems in the correct order to prevent this.

[Buds4949]

Nutes are general hydroponic trio
mix micro first grow second bloom third cal mag forth and Hydroguard last
or is there a different order and I wait about 5 minutes after each to add next

[FlyingDutchPaddy]

If i may correct you there on the order of mixing nutrients.... I use the GHE Flora trio as well.

pH water first to around 5.5 (i adjust to around 5.8 before adding nutes)
then add nutes.

1 - Silicon (if used, add silicon first, then pH to 5.5-5.8 ; Si acts a strong pH up)
2 - CalMag
3 - Micro
4 - Gro
5 - Bloom.

you could stir the water for a little after adding each before adding the next.

Attached a PDF from GH... notice the note left of 'create your own feedchart'.

[Buds4949]

Any other recommendations on other nutes I also have floralishious add on from the tutorial

[FlyingDutchPaddy]

pH first, which is what the european GH website says... kinda makes sence...

well, slight correction.

add Silicon first.
Then pH to 5.8
then add nutes.

silicon is a somewhat potent pH up; 30ml to 30L water that starts at 7.5 goes up to 8.8 - 8.9
i need to add about 14-15 ml pH down for the water pH to settle around 5.7.

after mixing in the rest of the nutes, pH hardly changes. maybe 0.1 - 0.2 but not by much more.

one site about Silica in hydroponics: https://medteknutrients.com.au/silicon-in-hydroponics/

[LurkingInTheGrass]

FlyingDutchPaddy

Thanks for the insight, found the other thread with the pH discussion

https://forum.growweedeasy.com/forum/growing-community/327489-ph-question

and the link

https://www.eurohydro.com/sites/defa...ll_plantes.pdf

[LurkingInTheGrass]

Depending on the size of the res you mix up in, you can use an airline and stone. I saw one guy (commercial grower, mixing up 100L) use a submersible pump as a mixer

I also use the GH trio, but I dont see white in the res. On the outside, sure (spilled nutes dry and leave salt stains)

I do get sediments (I blame the micro, it always seems gritty)

And ya, change your order of nutes, like FDP mentioned

[Formernuke]

I do 5 gallons in mine, I add some water nutes ph adjust (I know about how much it takes now) shake it up then add rest of water using kitchen sink sprayer shake final ph adjustment. I have no issue with nutes coming out in res.

[Farmall]

I had read a long time ago that the bacteria in Hydroguard May cause this... had some precipitate in the reservoir but just kept the weekly change going to refresh the reservoir. Never created any issues. I did use an air stone to agitate the water mix, it does a nice job of stirring

[RagWeedDWC]

This is the second year I have used hydroguard, first year to use GH products, I have not seen the precipitation at all. I have also read the same thing while doing research on a red scum I had on the bottom.

[Farmall]

I’ve had the red scum once, only lasted a week and never came back after a reservoir change

[RagWeedDWC]

I had it for about two changes, have not ideal what created it or why it went away. Only variable that changed was water temp, I did lower the heaters down below 70 and the issue when away.

[Buds4949]

Thanks everyone definitely will change my order and might look at the air stone for mixing

[FlyingDutchPaddy]

i'm also using 2 other things that i've not mentioned above.

Fulvic acid and seaweed/kelp extract.

typically when i do a water change, i do nutrients in this order.

Silicon
--> pH water to 5.7ish
Fulvic acid
seaweed/kelp extract
calmag
micro
gro
bloom

fulvic is like a helping hand to transport the elements into the plant
seaweed has beneficial amino acids

i've seen before that when i've pH'ed water and mixed in nutes... adding a drop or 2 of Si will cause precipitation... (calcium)

PDF attached is where GH mentions: pH water to 5.5 first.