? For southern AG gff users

I add southern AG gff every time I top up my rez. Is this wasteful? Will the existing population of good bacteria left in the rez make up for the addition of new rez water?

Should I only add when completely changing and cleaning rez?

What's the label say? Is it expensive?

Wayne55 said:

Should I only add when completely changing and cleaning rez?

Click to expand...

depends how often you change the res.

i use it 1x a week. as a preventative, not a rot cure though.

rkymtnman said:

depends how often you change the res.

i use it 1x a week. as a preventative, not a rot cure though.

Click to expand...

Complete rez change about once every 3ish weeks. It's 20 gallons and I'll add 1.5 ml of sag gff.

Top up rez 1 or 2 times a week and I'll add about .5 ml of sag gff

I also use it as just a preventative.

i would just do 1mL per week. it's cheap as hell so even if you did 1mL 2x a week, you still aren't spending much.

i get about a year out of my pint bottle. can't beat that for 20 bucks or so

I got root rot. Added sag gff. First time trying
But my ppms are going up??? Prob the ph but I've got an automated ph ppm monitor doser.

The roots are a slight brown. Plants look well and still growing but a little off. Slight discoloring.

Hobbitgoblin said:

I got root rot. Added sag gff. First time trying
But my ppms are going up??? Prob the ph but I've got an automated ph ppm monitor doser.

The roots are a slight brown. Plants look well and still growing but a little off. Slight discoloring.

Click to expand...

how much are you dosing them with?

1mL per 2 gallon

Hobbitgoblin said:

1mL per 2 gallon

Click to expand...

if you have rot, i'd cut your ppms at least in half. maybe dim or raise your lights too.

and make sure you are getting the Ag all over the place: netpot, medium, bottom of stem, etc. and don't be afraid to dose them hard until it's gone.

That's crazy, Intuitively that's what I did. They're getting better. And a 3rd reservoir change. I changed rez added cut ppm from 350 to 200 only base nutes and sagff 1ml per gallon.

I believe I caused a nute lockout adding silica/calmag/fulvic with amino and enzymes all at once. the nute lockout and weakened by the molasses experiment. But the sagff seems to be working well now