Mixed Nutrients in the tank, how long?

[johnnystackz]

Wanted to get a rough estimate on how long a nutrient mix should last if I keep in a tank in a dark area?
I know it will multiple microbes but wanted to see what everyone’s measure is, the ph in the tanks is sitting high at 6.9 but I’m going to add fresh water daily to taper it down.
What’s everyone’s thoughts the good, bad, & ugly?

 

[Herby Paisley]

I basically do the same as you I put it in a dark tank in a cool place basement floor works great, and correct the ph and ppm before I use it, and before I add it to the plant res, I throw an air stone in to the tank and oxygen up the nute'd water a bit.

 

[johnnystackz]

I basically do the same as you I put it in a dark tank in a cool place basement floor works great, and correct the ph and ppm before I use it, and before I add it to the plant res, I throw an air stone in to the tank and oxygen up the nute'd water a bit.

Air stone sounds like a nifty gadget I must acquire! Thanks for the input @Herby Paisley