Hydroguard or southern ag gff?

Phat J

Phat J

Well-Known Member
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What is the difference in these products? Isnt it the same bacteria in each bottle? Huge price difference! Hydrogaurd label says it has .038% bacteria and is clear. Southern AG says it has 98.85% bacteria and is like chocolate milk. Is this because it so much more potent? Is Southern AG safe for a recirculating ebb n flow system? Thanks for your knowledge and advice guys.
 
rkymtnman

rkymtnman

Well-Known Member
Phat J said:
I came to the same conclusion. So, is it safe in a recirculating ebb n flow using hydroton as a medium?
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you can use it anywhere you can use HG. i think the consensus around here is 1mL per 10 gallons is pretty good dosage. i use 1mL per 2 gallons so you can't overdo it.
 
Moabfighter

Moabfighter

Well-Known Member
Phat J said:
And its WAY cheaper. Thanks.
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The ingredient in hydroguard is actually in a lot of liquid microbial products. I found this out when looking at my sample microbe bottles. Out of 7 they all had some amount of the ingredient in hydroguard. Don’t stress too much if you have to use GFF or alternative. But whatever hydroguard does it does well. Nice clean roots
 
fragileassassin

fragileassassin

Well-Known Member
Moabfighter said:
The ingredient in hydroguard is actually in a lot of liquid microbial products. I found this out when looking at my sample microbe bottles. Out of 7 they all had some amount of the ingredient in hydroguard. Don’t stress too much if you have to use GFF or alternative. But whatever hydroguard does it does well. Nice clean roots
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A vast majority of us that used hydroguard have dropped it in favor of SA.
Southern ag works better than the hydroguard because we end up adding much higher concentrations of the same bacteria
 
icetech

icetech

Well-Known Member
People paying for hydroguard is just insane... AG is WAY more concentrated and costs a TON less.. I drown my plants in the shit.. it's been great.
 
K

KogaOchiyo

Member
  • Hydroguard: 10^4 or 10,000 Cfu per mL
  • Southern AG GFF: 10^10 or 10,000,000,000 Cfu per ml

that is 1 million times more concentrated in terms of colony forming units!

Dosage:
  • Hydroguard: 2mL/gal or 20,000 Cfu per gallon (amount on packaging)
  • Southern AG GFF: 1mL/20gal or 500 million Cfu per gallon (amount people post using)
Hydroguard is using a proprietary strain of Bacillus Amyloliquefaciens which they claim to be more aggressive, but is it 25,000x more aggressive?

Did I do the math right?
 
Billy the Mountain

Billy the Mountain

Well-Known Member
It worked for me. Let res temps get too high, got the pythium plague, didn't notice for a week or so, plants looked fine just no growth. Didn't check roots as I should have since things were rolling along and already in scrog. GFF saved the day, First pic a day after starting GFF, second nine days later, third 15 days later. I chopped off the bad roots even though new roots were emerging, not sure that was a good move or not. Seemed sensible to get rid of the diseased roots. Glad I didn't choose autoflowers this run!


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My Name is Mike

My Name is Mike

Well-Known Member
Switching to Southern AG after this grow. Does it have a "use by" once opened? Can someone confirm this that has a bottle of Southern AG?

Hydroguard suggests using within 6 months after opening is why I'm wondering. I'm not sure if it expires, goes bad or just not effective.
 
icetech

icetech

Well-Known Member
AG is good for like a year... the thing is eventually the bacteria dies.. anything that doesn't go bad isn't living bacteria.. that being said a quart should last at least 6-10 months.. mine has been going for quite awhile now.
 
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