Sticky Doc Bio Filter

DrDave

Innovator
Moderator
Joined
Aug 29, 2007
Messages
6,851
Reaction score
112
Location
Fallbrook, Ca USA
Pictures or the Doc Bio Filter are attached. These may also be found at any time from my signature link.

The Doc filter uses 1/2" irrigation tubing cut about 1 1/2" long and there are about 7000 of them. The overflow goes down a cascading water and its peformance is superior to anything I have ever used in my almost 42 years of ponding. These tubes will never clogg and will backflush without any problems since they do not retain water or the impurities that some of the other medias do.

The output water is as clear as bottled drinking water and this filter will take a pea soup pond to clear in 48 hours after installation.

Link to filter: http://drdaveskoi.tripod.com/html/doc_bio_filter.html
 

Attachments

  • G_55 gal 2 in dump valve.jpg
    G_55 gal 2 in dump valve.jpg
    37.3 KB · Views: 2,109
  • J_55 gal inlet and support installed.jpg
    J_55 gal inlet and support installed.jpg
    23.4 KB · Views: 2,156
  • M1_55 gal grate inlet assy.jpg
    M1_55 gal grate inlet assy.jpg
    27.2 KB · Views: 2,296
  • N2_55 gal filter top view.jpg
    N2_55 gal filter top view.jpg
    62.8 KB · Views: 2,319

DrDave

Innovator
Moderator
Joined
Aug 29, 2007
Messages
6,851
Reaction score
112
Location
Fallbrook, Ca USA
If you go to the link, you will find this one and the new style "Doc Filter" in detail. Parts list is pretty much self explanatory.
 
Joined
May 27, 2009
Messages
132
Reaction score
1
Location
Wash. DC
Just a quick question:
Would it be better to have the dump valve on the actual bottom of the drum? It would seem that I would be guaranteed to get all the crud out and I would have a flat surface to attach to... Yes No?

Thanks.
 

DrDave

Innovator
Moderator
Joined
Aug 29, 2007
Messages
6,851
Reaction score
112
Location
Fallbrook, Ca USA
Yes, closer to the bottom is better. That means you will have to suspend your drum for the clearance required.
 
Joined
May 27, 2009
Messages
132
Reaction score
1
Location
Wash. DC
I plan on setting it on 2 layers of cinder block, therefore I will be placing the dump on the bottom. Thanks.
 

DrDave

Innovator
Moderator
Joined
Aug 29, 2007
Messages
6,851
Reaction score
112
Location
Fallbrook, Ca USA
You might want to use a piece of plywood between the cinder blocks and the drum to help distribute the weight. Otherwise, the drum may not last long.
 
Joined
May 27, 2009
Messages
132
Reaction score
1
Location
Wash. DC
I have already built a support structure out 2x4s but maybe laying a piece of plywood over that would provide even more support, thanks for the suggestion.
 

DrDave

Innovator
Moderator
Joined
Aug 29, 2007
Messages
6,851
Reaction score
112
Location
Fallbrook, Ca USA
These drums are not as bulletproof as you might think. I set mine down too hard and it cracked. Now I have to use plastic liners in it. I use it to have water on hand for my nursery and hospital aquariums.
 
Joined
Dec 6, 2008
Messages
129
Reaction score
0
Location
Phila, PA
Dr. i'm trying out the plastic fencing also. I'm adding a twist by cutting them in smaller rolls like hair curler lengths and tying them with fishing line.It will be placed in a laundry bag with some bio balls that i had left over. Thanks for the concept.

sam
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Members online

Forum statistics

Threads
30,785
Messages
508,608
Members
13,044
Latest member
Melissabloomsnbubbles

Latest Threads

Top