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I have to vote for whenever. I have no schedule. My 55g gets 15g water changes an average of twice a week. Whatever days of the week I feel like doing it. The 30g gets 5-10g changes every 2-3weeks and the 10g is whenever I get around to it cause it rarely has more than 2 fish in it. I just test nitrates on all tanks every month and go from there for the next month. None have ever been over 30ppm and rarely over 20.

Twice weekly. Minimum. And it's a 50% water change each time. With thorough gravel vac.

Which makes my Pandas happy.

Panda Catfish fan and keeper/breeder since Christmas 2002

A man after my own heart Cal! I also do 50% water changes about every 2 days on my tank Keeps Princess my veiltail goldie happy, and I get to enjoy feeding her without worrying too much about messing up the water.

I LOVE my python!!!!

Every 5-7 days on many of my tanks, every day on my fry tanks and every second day on my betta tanks.

I do ours weekly - 10 days. Overstock/overfeed fish.

Weekly without fail

It used to be Biweekly, but now that I have gotten a Python, I can easily whip up a water change once a week, maybe every 10 days at the most, for my 10,25, and 90 I do 35% weekly - 10 days. For my angelfish fry I do a 50% water change every 3rd day.


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Usually every third week or so.

I have a lightly stocked, heavily planted/filtered 38 gallon, so I don't need to do them that often.

Joe Potato

I always try to do a 20% water change weekly in all my tanks.

about 30% fortnightly

I know i should do more, but i don't have the time anymore.





Last edited by PJ at 08-Feb-2005 05:12

I'm somewhere between weekly and biweekly. Mainly, its when I get to it between those two weeks. Usually, at the least, my tanks are getting bi-weekly water changes.

~Jorge

Sometimes a bit more... Once or twice weekly @ 20%.

For the traditional english speakers, could someone explain Biweekly and Bimonthly? Because to me, it seems it should be twice a week and twice a month but in that context, it sounds like that wasn't what you mean

Assist?


my bettas i do weekly.

My other tanks are monthly.

For animals, the entire universe has been neatly divided into things to (a) mate with, (b) eat, (c) run away from, and (d) rocks. - Terry Pratchett

I think what our American friends mean (in Traditional English ;-) is fortnightly and once every two months :-)

"Could someone explain Biweekly and Bimonthly"

Bi means 2. So every other week and every other month.

Last edited by Shannen at 08-Feb-2005 07:27

bi does mean two, but usually when joined with a noun, like 'cycle' or 'sexuality' - but 'weekly' is an advebial time expression - and unfortunately, like so much of the rest of the english language, adverbial time expressions are an exception - biweekly can in fact mean twice a week, OR every fortnight...most speakers tend to use 'fortnightly' and 'twice a week' instead of 'biweekly' because of the confusion..

Sorry, apparently here in my area, biweekly is used to describe every other week and bimonthly is for every other month.

Gues its just one of those things. Sorry for the confusion.

~Jorge

That could just be a quirk of the way we in the Australasian region use it - I've noticed that North Americans tend to use the words in the context expressed here.

Oh, ok, so biweekly = fortnightly and bimonthly = every two months.

Well, i guess i'm biweekly for a few of my tanks then, but mainly monthly and weekly.

Sorry for the deviation Racso, it was just confusing for me. (you should see me in the newsagents trying to figure out when the next issue comes out, i swear my brain steams!)



For animals, the entire universe has been neatly divided into things to (a) mate with, (b) eat, (c) run away from, and (d) rocks. - Terry Pratchett

kind of like Racso, I fall between once a week and once every other week. I try to change a minimum of 50-75% once a week in all my tanks, but sometimes time constraints limit me to once every other week or so. when I've gone longer than a week I change closer to 75%.

Hi,
I currently have "A" 30G tank and I change 5 gallons
weekly.
Frank


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Weekly @ 30%

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20% every week in the time-honoured fashion.

By the way Jase, thanks for that most excellent explanation of bimonthly. According to my Webster's (American) dictionary, bimonthly means once every two months. According to my Oxford (English) dictionary, bimonthly can mean happening twice a month or once every two months. It has the additional note: "Often avoided, because of the ambiguity of meaning, in favour of two-monthly and twice-monthly."

Just for fun, invite a bunch of mixed-nationality people to come for lunch "next Sunday" and see what happens!

Well, just like the title, how often do you do it. I'm just curious to see everyone's level of activity in their aquarium.

If North America says it means, 'Every other week' then so it shall be written in the tablets of time and passed down till the sun burns away!........

oh, and weekly.

-Dennis

Last edited by Beefshank at 08-Feb-2005 07:27

VOTED FOR: Weekly

We shoot for small water changes/gravel vac weekly, but every once in awhile we fall to bi-weekly because of one or both of us being out of town. So when we are out of town and skip a weekend...we don't feel so bad because it is usually done weekly.

I try to make sure it's done weekly, and I used to do it on Saturday. Because my job takes up most of my weekend time, I'm going to start doing it on Wednesday.

Weekly water changes are the key to sucess!

---

And when he gets to Heaven, to Saint Peter he will tell: "One more Marine reporting, Sir! I've served my time in Hell."

40% daily... discus in a planted tank.

__________
"To steal ideas from one person is plagiarism; to steal from many is research."
researched from Steven Wright

Every week to 10 days.

---

I used to be Snow White, but I drifted.
~ Mae West

Weekly at about 25-30 %,
Thats a lot of water for my 2 tanks.


Gibson SG you know you want one!!

25%. Using the Python makes it easy

approximately 22% per week or ten days.

sadly i can no longer use my python to refill my 46 gallon - or at least havent figured out a way to do it yet. about a month or so ago i noticed something in the water here that was clouding up my tank and leaving a white film on the surface of the water.

see, in order to connect the pyton i have to unscrew this filter thing thats on the nozzle of the faucet, so the water goes right from the pipes into the tank. one water change i noticed the water was full of this very fine white powder-y looking stuff. the fish didnt seem to be in distress but they werent frolicking in the current as they usually do during WCs. i can still use it to suck the water out and gravel vac etc., but to fill it up ive been using a one gallon jug (since i cant use the python with the filter) to fill the tank up, and it usually takes about 10 of them. UGH!

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Back in the saddle!

Every forthnight, a 20-25% water change.




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Member of the Malta Aquarist Society - 1970.
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Actually, mine is different for each of my tanks

55 gal with two small BGK's = 25% once a week

55 gal with two dirty oscars = 30% twice a week

29 gal with no fish currently = 50% once a month
(I keep it running with hopes of stocking soon!)

20 long with small red ear sliders = never just add two gallons a week to replace evaporation

Usually about once every 2 weeks at about 40%
DREW

weekly @ 20-40%..depending on the tank. sometimes it turns into 2 weeks though

--------------------------
Billy was a scientist, Billy is no more. For what he thought was H20, was H2SO4

Well, hopefully all know me well enough not to get overly angry, but I basically change my water (besides adding 5-10 gallons every other week to replace evaporation) about whenever I get around to it...which comes out to about once every 3-9 months...

So far I've had no issues with this pattern, so I'm not too inclined to change it just yet...

PM/email/msg me if you have any questions/comments regarding me or my knowledge or if you want me to read a thread.