Sponges And Lava Rock

saltysteve
  • #1
Filters are always an interesting topic. So many different filters and so many different opinions. There is biological, chemical and mechanical as most of you know. I'm coming back to fresh after taking a break from salt and or just tanks in general. Ive been trying to remember what is the bare minimum and very simple way to do this is.
From what I remember I used first a floss filter, then a sponge to collect some bacteria but also use it as a mechanical filter if I shake off the major dirt during cleanings once a month. The lava rock would be the main biological and wouldnt be touched. Chemical I wouldnt bother unless I had a ussue.

Or I could not run what I mentioned and use floss filter then something like chemipure after without rocks or sponges.

And anyone using lava rocks now a days?

I'm setting up a biocube 32 for freshwater fish and plants because that's what I have already. The fish I'm thinking of doing fancy guppies as ive never done them before and people seem to enjoy them. I'm setting everything up for my sons first bday
Apparently he likes fish like his dad!

Thanks for any input guys!

Cleaning tank with white vinegar at the moment
20180920_223609.jpeg
 
rainbowsprinkles
  • #2
Lava is the best for nitrifying and denitrifying bacteria ! I make diy filters with lava carbon and floss. My Other tanks I use lava as substrate or decoration. Really helps with water quality.
 
davidt39
  • #3
I haven’t used floss as a filter before. What type do you use? Is it the same as sold in a fabric store?
 
saltysteve
  • Thread Starter
  • #4
Yes ive used floss that comes in the.big bag for maybe stuffing pillows. Cheap and bag lasts very long. I use it sometimes as a prefilter. Now that I think about it I last just was using a cut filter pad for polishing the tank. But in the cheap gold fish filters that use a bubbler its carbon and floss. Simple, cheap and works well is why its still around
I haven’t used floss as a filter before. What type do you use? Is it the same as sold in a fabric store?
 
davidt39
  • #5
Thanks. Do you put it in the HOB filter along with charcoal?
 
saltysteve
  • Thread Starter
  • #6
Lava is the best for nitrifying and denitrifying bacteria ! I make diy filters with lava carbon and floss. My Other tanks I use lava as substrate or decoration. Really helps with water quality.
Is there a certain color or type of lava rock that is best? I'm thinking I only need about 2 big handfuls of it for my biocube.

The sponge is a good idea for what I wanted to do? I remember in salt its not liked as it builds up the nitrates. I can't see it getting out of hand if I clean it off once a month though
 
rainbowsprinkles
  • #7
Yes. Fabric store floss works but I just have an old pillow that I use for floss. Lol
 
rainbowsprinkles
  • #8
Is there a certain color or type of lava rock that is best? I'm thinking I only need about 2 big handfuls of it for my biocube.

The sponge is a good idea for what I wanted to do? I remember in salt its not liked as it builds up the nitrates. I can't see it getting out of hand if I clean it off once a month though

I’ve used red and black- both seem to work. I’ve had success with sponges - great for nitrification. I think it would work well for you..but recently switched them all in my nano tanks to this (below). Seem to be better at clearing debris than sponges. And less nitrates. Just floss, lava and an uplift tube. Works like an old fashioned corner filter
Image1537983823.236967.jpg here is a bigger version for a 25g with layers: scrubbie, black lava, carbon in a media bag, floss, red lava - cycled fast and made water crystal clear
IMG_6537.JPG
 
rainbowsprinkles
  • #9
Is there a certain color or type of lava rock that is best? I'm thinking I only need about 2 big handfuls of it for my biocube.

Should have also said Lava sold for grills is cheap-easiest to come by and works great .
 
saltysteve
  • Thread Starter
  • #10
I’ve used red and black- both seem to work. I’ve had success with sponges - great for nitrification. I think it would work well for you..but recently switched them all in my nano tanks to this (below). Seem to be better at clearing debris than sponges. And less nitrates. Just floss, lava and an uplift tube. Works like an old fashioned corner filter View attachment 483820 here is a bigger version for a 25g with layers: scrubbie, black lava, carbon in a media bag, floss, red lava - cycled fast and made water crystal clear View attachment 483821
That's what is nice about prefilters... they really polish the water off nicely. I think you might've noticed a difference because of using the floss.
 
saltysteve
  • Thread Starter
  • #11
Just went to home depot and they didnt have any lava rock. Any suggestions as to where I can locate some good but inexpensive lava rock?
 
rainbowsprinkles
  • #12
Really? That’s where I get mine.. Lowe’s, Walmart? This black lava makes great filter media ( and I’m using it as a substrate and plants love it so far) and pretty sure mine was already seeded with bacteria from the source because it cycled my tank so fast..
 
leftswerve
  • #13
I know everyone is going to jump on me however lava rock can contain phosphates and other algae inducing items (not to mention possible metals). Sooooo, if you get to a point where you can't control algae, look to the rock. Something to keep in the back of your mind.
 
rainbowsprinkles
  • #14
Thanks for sharing this possibility-I won’t jump on you but I’ve found that if these are factors then controlling nitrates seems to counteract these effects on algae. I don’t have algae issues in my tanks with lava. Less so actually..And fish and invert health has been no issue.
 

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