what skimmer - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 8 Old 02-20-2007, 05:52 PM Thread Starter
what skimmer

a very common question i would assume, what is a good skimmer for a 20 gallon tank with about 25 pounds of live rock with two ocellarius clownfish? There will probably be some mushroom corals and lots of button polyps. I dont want to spend too much, nothing more than 50-75 dollars but i still want a good skimmer, please note that the skimmer will be on the main tank, internal or external i dont mind.

Also will i need to add the skimmer right away when i set up my tank, if it costs more than 75 dollars i might need to save up for it. Im guessing since the clowns will be small when i get them they will have a small bio-load not really needing a skimmer?
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post #2 of 8 Old 02-20-2007, 08:56 PM
In theory you won't really need one in such small tank. But because we as humans are lazy, it certainly won't hurt. Find a used AquaC. In fact I know someone that has one. Want me to put you in touch with them?
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post #3 of 8 Old 02-20-2007, 09:30 PM Thread Starter
na, i'll just get a cheapo 30 dollar one to use, thanks though, unless he lives in chicago.......
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post #4 of 8 Old 02-21-2007, 06:34 AM
There is no such thing as a cheapo $30 skimmer that works. I beg of you to prove me wrong. Best of luck. With that type of attitude towards the hobby I'll be avoiding your posts. Your tank, and blood pressure, would benefit more with $30 worth of fresh salt mix then a waste of $30 worth of plastic from a foreign vendor.
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post #5 of 8 Old 02-21-2007, 06:48 AM
The cheapest skimmer I have seen was a seaclone. But you dont need one on a 20gal tank. Save the money and buy fresh salt with it. No if Im thiunking like you those little skimmers that you attach to an air pump are worthless.
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post #6 of 8 Old 02-21-2007, 03:41 PM Thread Starter
ok then, i just needed some facts on it crm, i didnt know the cheap ones are bad, im new to the hobby remember, i thought a skimmer was a skimmer no matter what. Another question, is there such thing as over-skimming a tank, i found a second hand prizm skimmer but there rated for 100 gallons or more, it was a pretty good price but im worried it will be too much for a 20 gallon.

Also remember i have many restrictions, my mom will never buy stuff online or take materials from shipping, she will only get second hand stuff when she goes there herself and picks it up after seeing it in action. Thats why i cant just get any second hand object that is cheap but not in the chicago area, my mom just wouldnt do it.

How does a skimmer work anyway, i know bubbles come up through this tuby thingy and this cup gets filled with dissolved fish poop, but how? How does only the fish poop go into the cup and not water?
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post #7 of 8 Old 02-21-2007, 04:23 PM
It is a molecular bond. Essentially the miniscus of the water, salt water being more dense then fresh, can form a stonger bubble. The outside of the bubble is basically a negative and the wastes are positvely charged. The material attracts to the bubble like a magnet and then the bubbles float to the top. They then sit at the top of the foam tower until more wastes push it up and over, forever leaving the water stream. Prizm skimmers are just about pointless. They do not work worth a darn. They have to be constantly adjusted to the water level in the tank. The Aquac remora with a an overflow box from the manufacturer actually does a decent job. Look into the Coralifes to save a dollar.

Cheap things in this hobby will only dissapoint. It is better to run without a piece of equipment then to run a cheap novelty as the stress from a non working part is far more difficult to overcome then a simpler tank that needs more hands on attention.
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post #8 of 8 Old 02-21-2007, 04:27 PM Thread Starter
ok, chemistry...... Makes sense though, thats probably why they dont work on a freshwater tank since the density is all different. So i guess i'll try to find a second hand aquac or save some money for a first hand one, or just not get one at all. Maybe when my fish are bigger i'll come back to this question
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