IME dinos are a result of too many changes in the tank. This can be as little as lighting or flow changes to as much as flipping and scrubbing rocks. Of course not the only reason but just my experience
my solution went against other recommendations (tank blackout, etc). I go the opposite - high power lighting. Burn it out (i.e. let it starve) by running the lights at a high setting most of the day. Then only feed as much as the fish can eat in 3-5 minutes, and only about 15 minutes before lights out.
get an airline hose and a couple feet of hard bubbler pipe (like what is used in undergravel filter tower pipes) and connect the two, use the hard pipe to target the dinos and suck them out with the hose to a bucket. For my 120g tank back in the day, I could suck out all the dinos in 10-15 minutes and only pull out about 1/2 to 1 gallon of water.
Then blow off with a powerhead, net what you can, and use a filter sock to capture the rest. Remove the filter sock after the water clears.
I'm sure there was more to my technique but that's it. The other part of my theory was the no matter what you do, dinos will last about 7-14 days. So all those methods were really reliant on the timeframe and then "see, it worked!" I guess mine is the same. Try it, you'll say "wow, see? It worked" magic
my solution went against other recommendations (tank blackout, etc). I go the opposite - high power lighting. Burn it out (i.e. let it starve) by running the lights at a high setting most of the day. Then only feed as much as the fish can eat in 3-5 minutes, and only about 15 minutes before lights out.
get an airline hose and a couple feet of hard bubbler pipe (like what is used in undergravel filter tower pipes) and connect the two, use the hard pipe to target the dinos and suck them out with the hose to a bucket. For my 120g tank back in the day, I could suck out all the dinos in 10-15 minutes and only pull out about 1/2 to 1 gallon of water.
Then blow off with a powerhead, net what you can, and use a filter sock to capture the rest. Remove the filter sock after the water clears.
I'm sure there was more to my technique but that's it. The other part of my theory was the no matter what you do, dinos will last about 7-14 days. So all those methods were really reliant on the timeframe and then "see, it worked!" I guess mine is the same. Try it, you'll say "wow, see? It worked" magic