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Please, let me be crystal clear this time, I ask for your opinion, not your perception of scientific facts... sorry you misunderstood. Let's begin again. And your scientific point is ---- what? You say, “I am going with scientific fact with a venturi device as a air stone does nor venturi does...

Actually the best ambient air this world, our world has to offer always contains 80% N2 and 20% O2. A few aquarium venders have heard of and know about dissolving to much (air) nitrogen into the water, Supersaturating aquarium fish water with dissolved nitrogen causes gas bubble disease...

There ain't nothin to it, like this: How Do You Make Small Waterfalls...

Chlorine is a killer for sure.

You are absolutely right... a total chemical kill will do it. Then a fresh start.

Air and oxygen are two different gases. You can pump all the air you like, but keep in mind that it is vital to insure minimal safe oxygenation for the plant and microbial eco systems, the limiting factor of oxygenation using air is the low oxygen concentration (20% O2) in air? Really does not...

Setbacks and expensive is always relative to how much "skin in the game" you got. 70F aerated water does not insure safe oxygenation, Here' s where a DO Meter is vital to test the water and actually determine much DO is really present. Without testing the solution with a DO Meter, you are...

When all fails, all there is left is ... LOL and hope. J

Please don't take it personal at all, it applies to the 300 million people living in America about anything and everything, any way they want to chose. The beauty of America is our freedom, having the right and ability to chose everything. Way better than living in Syria for example and having...

Like a “one-a-day” multivitamin.

Yep, you’re right. It’s from way back and is still as true and correct as the day it was written and published. Prevention is cheaper and much less stressful than curing the disease. Plant health always suffers the most from the disease even upon recovery, weeks are lost. Don’t feel alone...

This is America, you have choice, not chance... chose wisely.

Backward? how backward is buying a chiller, chilling the water and ho[ping the cold water will guarantee safe oxygenation for 2 different eco system at the same time 24/7 for months? How about something streight forward like this. If the plants and Beneficial's need more oxygen .. give them more...

OK, I did. Nothing has changed, still looks fine to me.

I see no problem keeping air and nutrient temp 82F - 85F provided there is plenty of O2, do you?

The oxygen demand or root O2 demand requirements increase 50% for every 9 F increase in temp while at the same time, the oxygen carrying capacity of the solution drops 12.5%. This does not take into consideration the oxygen demand required of all the aerobic microbes in the solution consuming...

Actually H2O2 and chlorinated water both are a great antimicrobials and disinfectant, kills microbes by the millions, even kills the beneficial microbes. But why would you want to kill the Beneficial’s with the routine application of these chemicals or suffocate them (lack of oxygen)...

Yep, they really do have meters that test DO Saturations. Just turn the meter on, stick the probe in the water and read the results, nothing to it. The crisis comes when the meter tells you that you’re your nutrient solution is very low on oxygen (DO Sat 40%). The Beneficial’s are suffocating...

A fungal outbreak and the crisis presents a real emergency and high stress for the farmer when all hope and luck fails. The fungal disease is ubiquitous, an opportunist, is damaging and can be terminal. It's everywhere, it's like air. Everybody knows that preventing a fungal opportunist...