I'm sure I was reading about the different kinds of media, now I can't find it. I've searched everything I could think of. There are formulas for the various kinds of medias, and also the pros and cons.
Help!
Help!
Link to article on filter media?
- Thread starter feralhuman
- Start date
That helps, thanks. Now where can I find the math for how much I need for my 155 with 5 turnovers per hour?
Weight to mass displacement ratio will indicate porosity which, in turn, indicates total surface area (provided the porous pockets are all exposed to atmosphere and not sealed at the surfaces (vugs)). Also to be considered is material being absorbed, attraction (bonding properties), out-gassing, and a few hundred other factors. Here are some of the calculators that are used.I still can't wrap my head around why lava rock ranks so much lower than commercial ceramic media. Could anyone help me understand how SSA is calculated?
Basically, I just accept the competitive quality stats put out by the industry studies.
The industry and hobby standard has been to incorporate 1 gallon of media per every 40 liquid gallons of system.
Ok, I think I get much more now. So while lava rock is porous, much of the internals are vugs, sealed off chambers within the rock? I'll stop there trying to figure out the rest, Thanks Oddball! I was starting to think there was a conspiracy against lava rock
1 last question, how do you know how much media is equal to 1 gallon, is it as easy as filling a gallon bucket with media?
I'd bet lava rock would work better if you smashed it into smaller pieces
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Turnover is flow isn't it guys? So if you wanted 5 turnovers an hour in your 155, you'd multiply 155x5=775, So your combined gph from all your canisters, hob, sump, etc, needs to be greater than 775gph for a 5x turnover. Be careful advertised gph aren't always 100% correct.
