There isn't a Biggest Story for Today, yet.
#1 Biolological filter
mbrown Posted on: 2003/8/29 9:52
Well, here goes! I am designing a filter for multiple tanks that will be a real biological filter. I am going to have water enter a large container with baffles to slow the water down and let settlements rest on the bottom. I am planning to put this filter next to a window that will get the morning sun and will have some sort of sodium vapor or halide lighting system for evening and night lighting. I am planning to have this filter full of emergent plants and some large house plants suspended in filter for more hydroponics. Has anyone messed around with this kind of system? I have done this with several smaller systems and it worked very well! I would love to hear someone's opinion on this!
Posted on: 2003/8/29 11:05
I have a filter system on the sumps under my racks of tanks, as I think you know. I use a modification of the de Bruyn filter, namely having the water drip over lava rock as it returns from the tanks. I have thought about having plants in the sumps, with lighting suspended over them. One reason that I haven't done that is the difficulty it might introduce of pumping out the sump for water changes.
When I was in Texas talking to the guys at TAKO recently, my host, Doug Ebeling, showed me a magazine about hydroponic setups like you describe. You might want to try emailing him to ask about it. He should be in the roster.
whuntley Posted on: 2003/9/13 21:57
A friend in Bettas showed me a simpler version of the filter you describe..
Lew Heiman put a tank on a stand with only edge support, so the bottom of the tank was exposed. He used a regular UGF in that planted tank, but placed an always-on light (24/7) below. This encouraged a lush growth of algae, beneath the filter plates, and dramatically increased oxygen in the tanks. It may also have warmed the substrate a bit.
When I tried it, Lampeyes just loved it, for it is usually difficult to get them enough oxygen at warmer temps. The warm substrate seemed to make my plants grow better, and no algae showed up in the region above the gravel.
I used a 13W CF, but a bigger one might have been better on the 15G tall (10G footprint). I did have a 40W CF (AH reflector) over the tank (10 hrs/day) and fed the plants a lot, including CO2.
lharper Posted on: 2003/9/13 22:11
I have gone through phases in my search for better and easier ways to keep killies. My current phase is once through fresh water replacement. Previously I had played with the DeBruyn filters with Lava Rocks, supplemented with Pothos growing in and around the filters and tanks. They seem to work pretty well, but the results with the once through fresh tap water (dechlorinated with granular carbon) are more spectacular and I can do 96 tanks with a manual timer (soon to be upgraded to an electronic timer). I am fortunate to have tap water that is medium soft and suitable for many killies without adding or subtracting salts. For those special killies I have a few separate tanks for Lamprichthys tanganicanus and for Maretecoara lacortei. I will deal with them next to provide automatic water changes.[/i]
Guest Posted on: 2003/9/13 22:24
What do you consider moderately soft?
My tap water is about 85ppm, but may be poorly buffered. I can drive about 5 miles and get 230 ppm water out of the Owens River, but that is a pain.
As I get set up again, I have gotten some Rubbermaid tubs and am thinking of doing much as you are, with "central filtration." I'll add a wee bit of "Equilibrium" if the CA/Mg content proves to be too low.
My big problem is wanting to do some brackish fish. The closest store with salt-water supplies is 200 miles north (Reno), so I'll be at the mercy of the mail-order suppliers, I guess. How does one do a biofilter for them?
bperkins Posted on: 2003/10/7 23:27
[quote="00344"]I have gone through phases in my search for better and easier ways to keep killies. My current phase is once through fresh water replacement. They seem to work pretty well, but the results with the once through fresh tap water (dechlorinated with granular carbon) are more spectacular and I can do 96 tanks with a manual timer (soon to be upgraded to an electronic timer). .[/i]
Can you elaborate a little further on just what you mean here? Are you talking about a freshwater replacement system that pretreats the water as it comes in and then overflows to waste? If I'm on the right track, what kind of throughput volume are you shooting for?
mbrown Posted on: 2003/10/9 0:19
I thought I would drop a line on this thread and up-date some of my findings. I have found that using "floating" plants such as salvalina and duck weed is two things, (1) They are much lower maintenance, no supplements are added to the culturing tank such as iron or other trace minerals and the lighting requirements are very low! I use a standard Hagen florescence bulb in the set-up. (2) They grow so fast, they are pulling the nitrogen wastes out faster than the fish or rotting debris can add to the system! I "must" pull two cups out a day of these lovely additions to this filter! Gooooood bye yuk, hello clean water! I am also using a "baffled" tank to allow natural settlements to, well settle:) I believe this is a more natural way of removing unwanted wastes, without stripping the water of some of the natural foods for the yunguns such as infusorians. The key is to allow a "slow" roll-over of the volume in my experience. I have 8, 10 gallon tanks on this set-up with a 55 gal tank as the filter. I use a drop in submersible filter that allows only the entire volume to turn over once a day, maybe less if I neglect the prefilter. What would be a nice addition would be a pump that returns the water back to the tanks with out the aid of a propeller. I believe the propeller and high revolutions of the pump chews up much of the natural food that would normally occur in a system like this. I imagine there is a pump out there that could work more like an internal screw that "pushes" the water gently, rather than blasting the water. I think I read about a pump like this that is used in natural reef systems utilizing huge refugems. I suppose this filter system is very much based on this concept. A pump like that would be big bucks i'm sure. Just some observations:) Cheers! :shock:
lharper Posted on: 2003/10/11 7:43Can you elaborate a little further on just what you mean here? Are you talking about a freshwater replacement system that pretreats the water as it comes in and then overflows to waste? If I'm on the right track, what kind of throughput volume are you shooting for?
Yes, I am using tap water that is run directly to the tanks by drip emitters after a carbon filter and the waste goes to the garden/lawn. Right now i am experimenting with rates and frequencies, but 2 hours per day at a nominal 1 gallon per hour for each 5 gallon tank seems OK.
mbrown Posted on: 2003/10/11 12:46
Yes, I am using tap water that is run directly to the tanks by drip emitters after a carbon filter and the waste goes to the garden/lawn"
I had a question a little off topic. I would like to ask you what qualities you look for in a carbon filter. I assume you mean an in-line filter cartridge. At what pressure is high enough to allow the carbon to effectively absorbed the chlorine and possibly chloramines?( I think I read off the list somewhere that chloramines is not absorbed, or it is partially but allows the ammonia to pass through?) How long do you surmise a carbon filter would last under normal conditions, with little to no chlor/chloramine and little suspended solids? I see a bunch available, and was hoping your experience could reiterate on this matter! Thanks a bunch!
You can view topic.
You cannot start a new topic.
You cannot reply to posts.
You cannot edit your posts.
You cannot delete your posts.
You cannot add new polls.
You cannot vote in polls.
You cannot attach files to posts.
You cannot post without approval.
GMF - Donate Now!