There Is Allot Of Argument

[Proud Texan]

I was reading on wikipedia a while ago and it said "even though there is a lot of controversy some aquarium keepers claim 300 gal tanks and over never need there water changed as long they have got good filtration and the cycle is complete."

True or False you decide!!!

 

[Proud Texan]

I think it could happen just maybe in something larger than a 300 gal

 

[iankent]

i dont see there'd be any reason why it wouldnt work, I think the key word there is filtration - as long as it's removing the stuff it needs to (hopefully including things we cant measure etc.), then the fish should be happy enough - the volume of water is also very important, i.e. in the global nitrogen cycle, the water is never changed

 

[Proud Texan]

I agree with you ian. I hope everybody votes in the poll

 

[kribensis12]

NOT TRUE WHATSOEVER. Fish need fresh water to survive. Also, if you were rasiing baby fish, they owuld only get so big, becasue they let off growth hormones. Once there are to many growth hormones, they stop growing. Also, how would a 300g tank be any different form a 30g bsdies it has more room for mistakes, and takes longer for nitrate to build up?

 

[Proud Texan]

im glad you posted but i have too disagree with you, i know a few people with indoor ponds that are huge and normally stocked with filtration who wouldn't even know how to do a water change.

 

[kribensis12]

^ Yes, but assuming that your pond is outside, there is a thing called rain, which will fill the pound up, and heat/sun, which will evaporate water, taking the hormone with it. Also, ever heard of the saying" ferquent water changes prevent almost every disease?" Its true, i havent had problems in a while since i stepped up and did 1 once a week water changes, and did them on time. I havent had a fish die in a while actually ( unless you count baby jewel cichlids, as they are only a week or so old and there are HUNDREDS of them)

EDIT: Fixed spelling, i just realized how bad it was!

 

[england]

agree with krib

 

[Proud Texan]

i know a few people with indoor ponds
key word INDOOR
INDOOR
INDOOR

last time i checked Mr.12 IT DOESNT RAIN INDOORS!

 

[kribensis12]

i know a few people with indoor ponds
key word INDOOR
INDOOR
INDOOR

last time i checked Mr.12 IT DOESNT RAIN INDOORS!

Thanks for being Sarcastic Mr. Texan! Gotta Love it!( incase you couldnt tell, that was COMPLETELY SARCASTIC). Ohhh, and last itme i checked it didnt either! So, then what happens when your pond water evaporates? It magically fills up again by itself? Didnt think so =]

 

[nickelplates]

i dont see there'd be any reason why it wouldnt work, I think the key word there is filtration - as long as it's removing the stuff it needs to (hopefully including things we cant measure etc.), then the fish should be happy enough - the volume of water is also very important, i.e. in the global nitrogen cycle, the water is never changed

This is not true of a natural body of freshwater whether a lake or a river. Fresh water falls from the sky and even a lake normally has some exit. In other words nature provides water changes. Those rare bodies of water that truly do not have an outlet accumulate dissolved salts and eventually become deadly to feshwater fish, the most extreme example being the Dead Sea.

The GLOBAL cycle is nothing to do with what goes on in any given body of freshwater.

 

[iankent]

^ Yes, but assuming that your pond is outside, there is a thing called rain, which will fill the pound up, and heat/sun, which will evaporate water, taking the hormone with it.

have to completely disagree there - evaporating water doesnt carry with it anything. take for example a bowl of salt water, when evaporated will leave behind salt. just as a bottle of "mineral water" when evaporated will leave behind all its minerals (usually a brown looking film on the surface you've evaporated from)

plus, where does rain come from? it's not new, its been used over and over again! bacteria will grow to ensure things stay balanced, and (presumably) in a larger tank, with no water changes, additional bacteria would eventually arrive to take care of things!

 

[Esfa]

yeah they do need water changes because the nitrates would build up. granted, it would take a long long time, but they still would.

also, other toxins would build up, like aerosols etc which would build up to dangerous levels.

also, water changes help to remove bits of crap in the water, so it will just make the tank look nicer.

 

[iankent]

This is not true of a natural body of freshwater whether a lake or a river. Fresh water falls from the sky and even a lake normally has some exit. In other words nature provides water changes. Those rare bodies of water that truly do not have an outlet accumulate dissolved salts and eventually become deadly to feshwater fish, the most extreme example being the Dead Sea.

The GLOBAL cycle is nothing to do with what goes on in any given body of freshwater.

we started off with a well filtered aquarium - I'm not saying that your standard filter is going to keep the water decent enough for that length of time, but I dont see why there couldn't be filtration systems that are up to the job of emulating mother nature (i.e., on a global scale, regardless of any individual bodies of water, the same H2O is used over and over, and hence never changed - though on its way it might become a range of other chemicals )

edit: i dont think the poll is quite specific enough

 

[kribensis12]

have to completely disagree there - evaporating water doesnt carry with it anything. take for example a bowl of salt water, when evaporated will leave behind salt. just as a bottle of "mineral water" when evaporated will leave behind all its minerals (usually a brown looking film on the surface you've evaporated from)

Dude, not a good example whatsoever. Salt weighs more than water. Ever lifted up a gallon of fresh water, adn then a gallon of salt water? The salt water weighs more. So, when the water evaporates, the salt stays there becasue it wieghs to much. The hormone weighs next to nothing, water weighs next to nothing aswell. Im sure if you pupmed alot of that growth hormone in a 10 gallon, there might be a slight differnece, but in the end, it still evaporates with the water =]