Quote:
Originally Posted by ceg4048
Hi,
It's not clear to me why you would attribute the growth rate to AS alone and not to EI + CO2. I can get amazing growth rates using inert sand + EI + CO2, so from that standpoint the performance of the AS would be overrated.
According to the most recent Barr Newsletter, AS performs about as well as lake sediment and not a well as the combination of garden variety potting soil+sand. In fact, the test results indicate that of the 6 substrates tested in the study, AS Amazonia came in 5th.
Enriched soils perform better than inert substrates, obviously, but a better test of AS or any substrate would be to grow the plants with minimal water column dosing as discussed in the Newsletter.
Cheers,
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First of all and with all due respect, I did not attribute growth rate to AS alone. Please reread by post carefully and you will see the reference to EI+c02 along with use of ADA Aquasoil.
The post was someone's question about how ADA compares to Fluorite. While i have not grown plants in the other sediments mentioned and don't doubt Tom Barr's findings, I have grown plants in fluorite with equivalent plants lights, c02, water column fertilization and the plants in ADA Aquasoil fared better, so I was merely relyng my experiences. Other peoples' experiences and mileage may vary and I don't purport to speak for other peoples' expereinces. Second, it is a well known fact as reported by other users of ADA Aquasoil that they have seen better growth with ADA Aquasoil vs other Substrates without the use of water column fertilizers(with all other things being equal - lighting and co2 levels) when they planted in ADA Aquasoil.
The person who posted asked a question. I answereed based on my experience. If you want to offer your own view fine, but I would appreciate you not reading into my posts what I did not say. This forum is allegedly set up for people to learn and share their collective experiences, so try and be mindful and respectful of that whether you agree or disagree. Thank you.
***In other words you appear to be communicating the message: save your money and use lake sediment or a combination of potting soil plus sand.*** I think you could have easily said this in a response without all the drama.