Questions tagged [filters]

Filtration systems for aquariums and ponds. Issues relating to man-made of natural filtration.

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35 views

8.0ppm ammonia spike that's been “in effect” for about a week or two

OK, so I went into fish keeping way too fast with almost no knowledge. I will give a short rundown of what happened in my tank. I got a 5 gallon (19 liters) tank and a silver molly and a leopard ...
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2answers
16 views

sponges for mechanical particle filters for aquariums

A colleague just started the fun with dealing with a big aquarium (his first). He asked for my advice, and I provided my best. However, being both engineers, we started discussing out-of-the-box ideas ...
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When (or If) to reseal an sump?

I bought a glass sump (intended for a fresh-water tank) 2nd hand that has clearly been put together at home. The construction looks great, but you can tell its homemade since the seal has "frayed ...
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2answers
155 views

My brand new goldfish is gasping for air

Today I went to the pet shop and got a goldfish. My tank is 20litres and the goldfish is pretty small. When I first got the fish it was gasping and eating the bubbles in the bag I thought this was ...
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1answer
49 views

How is GFO reactor better than PhosBan medium in the filter?

I have a cyanobacteria problem. I am using PhosBan/Phosguard as a filter medium and it doesn't really work that well, shall I worry of getting a GFO reactor or am I good with how it is? How would GFO ...
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2answers
2k views

How do I fix BAD betta fin tearing?

I’ve had my betta for a month now and hes been PERFECT!! I just looked at him now and saw that his tail is SHREDDED!! I realized that he had been glaring at the filter in the back and KNEW that he’d ...
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2answers
2k views

Why does my nitrate level always read 0?

I have the following tanks: 5 gallon, 2 months old - housed betta and shrimp 10 gallon, 2 weeks old - used established media to seed aquarium alongside cycle and beneficial bacteria 3.5 gallon - ...
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1answer
145 views

Is a carbon or cartridge filter necessary in an aquarium with a simple biofilter?

I'm trying to setup my first aquarium, and in the process I've been reading all about the nitrogen cycle and properly cycling a tank to ensure there's bacteria present to work on the ammonia and ...
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0answers
47 views

Starting up a canister filter that has been off for a while

We prepared an Eheim canister about a week ago and had also put some tank water in it but, because of a series of setbacks, we haven't been able to start the filter in our new tank. We are still not ...
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2answers
363 views

Juwel Filter Pump Too High?

We have a Juwel Lido 200. The black filter box was on the right side of the aquarium; but we wanted to move it so we removed the silicone and re-siliconed it on the left-side of the aquarium instead. ...
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1answer
144 views

Noisy canister not pumping

I've had this Sunsun 304b canister for a few years now. It was very quiet originally but in the last few years has gotten noisy. And then two weeks ago it stopped pumping suddenly making a loud ...
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0answers
1k views

Why do fluidized sand filters need a prefilter?

When talking fresh water fish tanks, why do people recommend that fluidized sand filters have a prefilter like a sponge? Assume there is a separate system for removing solid waste from the tank, like ...
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1answer
86 views

What is the correct order of elements in Haqos EX1500 External Aquarium Filter

After looking at some youtube videos and investigating this filter, I think that some info on the web is either incorrect or simply unsuitable to the HAQOS EX 1500 External Canister Filter. What is ...
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2answers
755 views

Why is a biological denitrification filter considered cheap to build and operate?

I found more than one (old) websites (in German) (http://www.teichratgeber.de/wodkafilter_bau01.html and http://www.ohligers.de/Nitratfilter1.htm and there're probably more) which consider a ...
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0answers
152 views

Create air intake from submerged water pump…?

I'm setting up a wet / dry aquarium filter and I'd like to handle both the water return and the protein skimming (foam generation) with only 1 submerged power head, a situation consisting of 1 ...
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4answers
9k views

How many grams of ceramic rings do I need in my filter

I'm using ceramic rings as filter media for biological filtration. For a given aquarium size how many grams of the ceramic filter media do I need? The packet doesn't have sizing instructions. I also ...
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1answer
1k views

Aquarium Filter… What's the order?

Yesterday I bought a filter (top filter): a Sea Star HX-1480G, with F.Max is 2800L/H (which i means that it moves 2800 Litter of water per hour). I installed 1 layer of a polyfiber pad at the bottom,...
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3answers
2k views

How to upgrade fish to a much larger aquarium

I currently have a 15gal tank fully cycled. The tank is stock on the heavy side of thing and I purchase a larger tank (75gal) for another project I will not be doing finally. So I will use the larger ...
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1answer
648 views

When is (more) aquarium bio-filtration overkill?

I have a 75 gallon freshwater aquarium with a pretty heavy fish load (7 giant fist-sized+ blood parrots). But I also have a giant Eheim 1200XLT canister filter running with gallons of various bio ...
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1answer
600 views

Does Juwel Cirax (ceramic biological filters) affect pH in the aquarium

Currently the water in my aquarium is having a higher pH than I want. What I wonder is if the Cirax filter (and in general biological ceramic filters) affects the pH value (by increasing it, or if it ...
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2answers
127 views

Better solution for holding appliances inside the aquarium?

We've all seen these devices. They're the suction-cup clamps used to affix heaters, filter intakes, tubing, and other appliances inside the aquarium. But the suction cups quickly deteriorate and no ...
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1answer
2k views

Why should I replace my filter media?

When I search the internet about this question there are many different opinion about the right interval to change filtration media in a regular freshwater tank. On the packaging of different media ...
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1answer
3k views

How long to wait before I remove the old filter

I have recently purchased a sponge filter just like this one. I added it to my tank when it arrived home about a week ago. My tank has been running for over 4 month now. The tank has been stocked for ...
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1answer
4k views

Black goldfish with its fin clamped down

We have two small fish in our tank, they seemed very happy until about a week ago. They both became fairly inactive and had their dorsal fins clamped down against their backs. We thought it might be ...
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2answers
5k views

Aquarium overflow vs bottom of tank intake

Wouldn't something that sucks out detritus from the bottom be better than something that can only pull floating stuff? Reasoning: A wet/dry filter will usually feature an overflow, whereas other ...
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1answer
3k views

How can I reduce my need to do a water change on my turtle's habitat?

Hello turtles masters :) I have 20cm (shield) turtle in 70L of water in aquarium. As a filter I use Repti Clear F350 (276L/hour 6W). I also use ReptoFresh and ReptoSafe. Problem: Even I clean the ...
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3answers
34k views

How long can an aquarium remain without any filter and heating?

The filter and the heating of my aquarium do not work anymore. After trying to solve the problem I've concluded that the only way to solve the problem is to buy a new filter and a new heating. Can my ...
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1answer
2k views

How well does an internal filter keep water oxygenated?

I'd like to use Tom's Internal Filter which is an internal multistage filter, but I'm not sure if I'll get any oxygenation. Background: I now have a three gallon tank and I'm trying to figure out ...
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1answer
332 views

What remaining equipment do I need for a marine aquarium? [closed]

I want to convert my soft water aquarium into marin aquarium, but before I do that I want to make sure I have all the required equipments and few critical equipments in spare as well. I already have ...
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2answers
8k views

Can I run Undergravel Filter in Reverse to Keep the Gravel Clean?

I current have a 75 gallon, unplanted aquarium in which I have NO gravel at all. I removed the gravel years ago because I liked the clean look… and not having to vacuuming the gravel to remove ...
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3answers
2k views

Under gravel or sand filter for aquarium

Is it better to have an under gravel filter than the traditional out of water filter that sits on top of the aquarium? I keep an air hose on during the day that blows bubbles and have live plants. ...
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2answers
25k views

Is it safe to move fish and all equipment to a new tank?

I currently have a 10 gallon (38 L) tank with the following fish: 1 male dwarf gourami; 6 glowlight tetras (4 female and 2 male). Here's my current setup: "Aqueon 10" filter (labeled as being ...
6
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1answer
268 views

What is a “sump” when talking about aquariums?

I always thought that sumps were a part of the basement where water that seeps into the basement collects. We would have to use a "sump pump" to make sure that the basement didn't flood during/after ...
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1answer
101 views

Filtration of smaller ponds

I've asked some questions about my goldfish What indicates whether my outdoor goldfish are healthy or ill? and noticed a lot of response referring to the likelihood that fish would survive in such an ...
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1answer
4k views

Do I need a bubbler in my aquarium?

I have an aquarium of 280 liters (~ 74 gallons). I use an external filter, so the water returns to it like a small waterfall. Do I need a bubbler to improve the O2 level of my aquarium, or adding one ...
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2answers
2k views

How do I know when I need to replace the charcoal in my aquarium filter?

I recently purchased and installed an External Canister Filter in my aquarium which includes a filter stage with little bags of charcoal media. Clearly I need to replace this at some interval because ...