(davo wrote)
I wouldn't say so, I've never used Powerheads and have always stuck to 5x turnover with great results
(truck wrote)
depends on the application and media used, if you use sand then detritus will settle with 5 times turnover, i had 17x turn over in my rio 125 and still had dead spots
davo,truck, Interesting conversation. On advice from this forum I "upped" my initial plans from something smaller to what I thought was "huge" at the time (in flow rate, media volume and cost) going to a 5x external cannister filter. Its an awesome piece of machinery and I've never regretted it but of course when you do things that seem new and challanging at the time they often change your perspective. A turnover rate of 5x no longer seems so large and violent to me and looking from the plant perspective I'm beginning to appreciate the kind of thing truck is talking about.
From a beginner's perspective I think the difference between 5x and greater is pretty subtle. Of course flow rate is only one dimension of a filter and many of the kinds of filters we're talking about here, especially the cannisters, will give you the ability to have a beautifully running tank.
I'm interested davo, in particular, where you stand with the planted thing. I've got it in my head that I'm remembering you having some cichlid tanks perhaps without many plants but I may be totally wrong and just remembering some picture not really associated with you (?) I already know that truck planted tanks in some capacity or another, right truck?
~~waterdrop~~