how long will this last for a large 2100 gal outdoor fish pond?
177629
about 2 gallons of charcoal will last about 2- 4 weeks in a 2100 gal outdoor fish pond. But it also depends on what you are filtering, how much debris or toxins in the water, how much algae, dirt, or muck, and how you are filtering the water. The surface area of 1 gram activated carbon is quite large approx 500 m2. However, I believe this product is extruded and may have some of the properties but not all of the surface properties of granular or powdered activated carbon. I crushed the product I have before I place it in the aquarium. The other comment you might need is that other than clearing up the water quality, it us usually used to neutralize or capture chlorine which you may not have in your pond. Since you mention that it is a fish pond, not knowing how many fish you have in the pond, if it is more than the natural capacity for healthy fish maintenance, you may want to consider using an ammonia remover like zeolite to capture ammonia, a byproduct of fish wastes.
177630
That really depends on your bio load and type of fish you have. My guess would be about two weeks.
1409125
According to the diagram on the box, the manufacturer suggests a 250w unit for a pond up to 1,000 gallons. Anything over 1,000 gallons they suggest 750w.
596118
It should be fine. If not, them setting it on a brick should do it. I'm surprised by dogman's experience. Mine has run beautifully. I even had it running in my partially frozen pond all winter (as an aerator). However, I am superdiligent about cleaning it. I clean the filter media 3-4 times a week. In the summer it gets cleaned daily. I could easily see this unit clogging if it were cleaned infrequently.
1980897
Mine lasted a little less than 2 years and quit working in the middle of a week of teen temperatures. The pond it now frozen solid on top cracking the liner. Based on not telling whether this is working on not without an indicator, I would now recommend it. Especially now that it is going to cost us a lot of time to dig out and replace the entire pond unit.
189906
Yep. I purchased a 2nd one for this year and have it running in my pond now. Works great.
1220192
Yes it is good enough for a 200 gal, but if the pond is over loaded with fish you will have to add bio rings to keep the water clear. The bio rings also keeps the box form floating.
1550694
I bought 2 of these. One lasted 4 months the other 6 months in aquariums. I would guess you might get a good week or 2 in a cold sump before it stops working.
1762475
I've been using this for two years in two ponds. So far all"s well as for the fish, snails and plants. Don't have any shrimp, so I can't answer to that.
244012
Probably not. I don't know how many gallons my pond is, maybe 90-100. It does a good job, but when the water starts really warming up I have to clean the filter every other day. I think you need something bigger.
2163603
I do not know how many gallons can this hold/it does not have drainage holes at the bottom but I guess if you use as a small fish pond it could work,hope this would help to answer your question.
1894341
are you concerned about fish, plant life? I have both in our pond which is about 1000gallons and everything does well in it
1340330
I would imagine it depends on the water you put into it. If your local water turns or grows algae quickly...
1953773
You need to give it some time. Mines took at least 3 weeks before I started seeing my pond clear up. No additional chemicals.
542498
Thanks for all the answers. Was a little weird seeing the light. Pond is about 13' x 15' and after 24 hours water seems to clear. Just wanted to make sure the Koi do not wake up with a tan ...... ; )
309753
Depending on you're pond size I'm using a 1600 gpm on my 1800 gallon pond. Water is crystal clear year round as it is in the sun all day. We did use the blue pond dye and the fish really like it and it is algae free. Good luck
922623
It is not too bad. I have only had to do it twice in over a year. Several screws and it comes apart fairly easily. The pain is worth what it will do for your pond. I have about a 400 gallon setup and within two days it killed all the suspended algea in the pond and the water went from green to crystal clear. Almost too clear.
1409128
There is a chart on K&H;'s web site that you can use to fugure out what size watts you need for your pond and area.Good luck.