I think people have come and gone on this thread saying that it is possible for ADA tanks to be filled without cloudiness. that is not disputed. however, can ADA tanks be stirred up and uncloud within 30minutes? while some people may say "why would i do that?" but the fact is that if this happens, GEX is the superior product because of its quick clarity. I believe that this does happen for many people (especially those new to the hobby and don't know to fill their tanks the way you do).
My personal experience is stressed fish thrashing about the bottom of the tank and stirring up ALL the substrate (3 inches thick) for 1/4 of the tank. the cloudiness raised was very contained to the area 1/2 a foot above the stirred up area and it settled/disappeared in less than 30 minutes. I've also done an entire rescape with Gex (removing all hardscape buried in the soil as well as uprooting all the plants) and left the fish inside (including my precious zebra otos) and i had less than 15 minutes of cloudiness and not a single fish death. that is, i believe, what is superior about Gex
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