When less is better than more...

And the much under-rated under gravel filter, when operated with just a modest flow of water (e.g. plenum) is a most excellent filter. Here again, marketing has convinced many hobbyist's that UGF's are not as good as their power filters.
Disclaimer: If/when a UGF is operated with a high flow rate and not cleaned periodically (e.g. grave vacuuming) they admittedly can become a nitrate factory!
What is your opinion on the Plenum design advocated by Kevin Novak.? I watched several of his videos and they look interesting (and I like to learn new things)

 
What is your opinion on the Plenum design advocated by Kevin Novak.?
The 'Plenum' Dr. Novak talks about is really just a low flow under gravel filter. Again, less is more! All you really want is a low flow through the gravel (or sand using permeable landscape fabric). UGF's really fail when they're cranked up for high flow....low flow is the ticket. Now if I was doing it, I'd leave the UGF stand pipes as they are rather than chop them down as he suggests - I'd just probably use a clogless air stone and throttle back the air to create a slow flow through the media. :)
 
i think sometimes if there is too much flow some fish get stressed out
like gouramis
beforei installed the sponge filter, i had an hob and betta was super stressed in one side of the tank
 
i think sometimes if there is too much flow some fish get stressed out
Many hobbyist's get fish that in the wild may live in faster moving streams or rivers...so they attempt to simulate this condition in their aquarium (which can be difficult to do). But often, many of these fish were bred and raised in tanks or ponds and never saw fast moving water. Imagine the difficultly of being tossed into a new environment completely unlike what you've grown accustomed to. Talk about a recipe for stress.
In general, we want good circulation in an aquarium to minimize thermal gradients and to somewhat evenly disperse minerals and nutrients. But excessive flow is often counter productive and in some cases, potentially harmful. :)
 
Many hobbyist's get fish that in the wild may live in faster moving streams or rivers...so they attempt to simulate this condition in their aquarium (which can be difficult to do). But often, many of these fish were bred and raised in tanks or ponds and never saw fast moving water. Imagine the difficultly of being tossed into a new environment completely unlike what you've grown accustomed to. Talk about a recipe for stress.
In general, we want good circulation in an aquarium to minimize thermal gradients and to somewhat evenly disperse minerals and nutrients. But excessive flow is often counter productive and in some cases, potentially harmful. :)
yep
no flow at all sometimes causes biofilm and other nasty stuff lol
 
As you know I have just purchased some whiptail cats. They take turns to sit in the current off the 1000 l/hr internal filter. Then they go away into the calm places in the tank, I think they sit in the flow so they can clean their teeth.
 
As you know I have just purchased some whiptail cats. They take turns to sit in the current off the 1000 l/hr internal filter. Then they go away into the calm places in the tank, I think they sit in the flow so they can clean their teeth.
ooh please update and ping me
i always wanted to get plecos but i didnt want them to get so big so a good alternative would be whiptails
i have a strong filter place too
and want to get some Red whiptails
 
ooh please update and ping me
i always wanted to get plecos but i didnt want them to get so big so a good alternative would be whiptails
i have a strong filter place too
and want to get some Red whiptails
20220106_143701.jpg
 
Perfect, they will love it in there. Soft acid water.
it is not super soft but near the soft side is that ok?
i can add a manzanita branch once i finish cleaning them up
 

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