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Water Changes


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#1 FishGal

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Posted 25 July 2007 - 05:11 PM

Just out of curiosity, how often do you do your water changes and how much do you take out each change?

#2 Cawdor

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Posted 25 July 2007 - 05:17 PM

I change it once a week and I change 20-25%.
My 6x2x2 sometimes gets changed only fortnightly.

#3 cobby

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Posted 25 July 2007 - 05:24 PM

Iwas told not to change to much at once as it will lower the temp and cause stress. Is this correct?

Regards Cobby

#4 alec

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Posted 25 July 2007 - 05:25 PM

25%
once a week biggrin.gif

#5 Managuense

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Posted 25 July 2007 - 05:53 PM

i do 25% every 2 weeks. mainly because i have larger tanks.

#6 Scat

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Posted 25 July 2007 - 05:56 PM

I do 25% once per week

Cheers biggrin.gif
Craig

#7 FishGal

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Posted 25 July 2007 - 06:02 PM

You see this is where it gets confusing, cause one LFS tells you one thing, another tells you another, other advice you get is different again :? !

I've heard anywhere from 25% once a week to only 25% once every 2 - 3 weeks!

I've heard if you take too much water out of your tank, then you can start your tank cycling again but have never had this problem myself...has anyone? :roll:

#8 benckie

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Posted 25 July 2007 - 06:08 PM

25 % weekly if im trying to maintain a certain water chemistry or 50% on tanks that are low ph, low salt and dont have canisters or uv,s

#9 dazzabozza

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Posted 25 July 2007 - 06:16 PM

Hiya FishGal

The frequency comes down to how quickly your nitrates build up. If your tank is heavily stocked and your filters can't keep up then u'll need to increase your frequency. Monitor your levels and find a frequency that suits you. Increasing your filtration is also another option. With my tanks I can get away with a 30% water change ever 3 weeks.

The amount/volume is more dependant on the type of fish your keeping and how hardy they are to parameter changes (PH, temp etc). Tang cichlids are well known for not handling large changes.

Removing the water probably isn't what causes the cycle. Either the new water hasn't been treated correctly and the bacteria is killed off or too much bacteria is removed from the substrate when gravel cleaning. If it has to re-establish itself then u'll see a mini-cycle. Over cleaning your filters can cause this too, make sure u avoid tap water. Personally I'll do one of the tasks above on one maintenance round and then another on the next etc so I don't cause an upset.


Dazza smile.gif

#10 FishGal

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Posted 25 July 2007 - 06:27 PM

None of our tanks are overstocked (IMHO) but the other half may disagree and they are his tanks lol! And all our tanks are overfiltered.

We do weekly water changes, but more than 25%. We have done this from day dot and all our fish have grown at a rapid rate and are all healthy, so we are obviously doing something right! Having said that, if we went into our local LFS and told them what we are doing, they would tell us we are

1. Changing the water too frequently and
2. Changing way too much water in one go.

But our fish say otherwise.... biggrin.gif

#11 jack

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Posted 25 July 2007 - 06:28 PM

i do 1 33% water change every week in 2.5ft

and at the moment in my angels tank doing 10-15% tank due to something wrong with one of my angels dorsal fin i think something must of built up because it has been a bit neglected but my bigger angel is fine and growing strong

#12 benckie

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Posted 25 July 2007 - 06:29 PM

33% laugh.gif

#13 cobby

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Posted 25 July 2007 - 06:30 PM

Yer iwas told changing to much water will lower the temp and could bring on white spot

Regards Cobby sad.gif

#14 jack

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Posted 25 July 2007 - 06:35 PM

i put my hand in the tank to start with to feel the temp then when i turn the taps on try and get it the same by checking in the bucket works for me

#15 madasa

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Posted 25 July 2007 - 06:48 PM

Frontosa tanks - gravel vac and 50% weekly

BGK - alternate 25 and 40% weekly with gravel vac

Fry grow out - 25% and gravel vac weekly

Discus - 25% three times a week

All others 90% and gravel vac plus extras in the week

#16 jack

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Posted 25 July 2007 - 06:51 PM

oh yer forgot to add half my water change is due to gravel vac

#17 NicholasC

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Posted 25 July 2007 - 08:52 PM

My 2.5 foots outside is 20-30% once a week due to the rain water tank been so close.

Barramundi (6 foot) is 50% once a month.

Marine Evap Top ups 2-5% daily

Tropical 30% every 3 weeks

Cichlids and Bristlenose 20% every 2 weeks no more top ups for the BN's breeding

Mosambique mouthbrooders (Tilapia) 30% every 1-2 weeks

#18 FishGal

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Posted 25 July 2007 - 09:51 PM

We do a 50 to 60% water change once a week on our 6x2x2 and between 40 to 60% on our other 6fts.

#19 Neakit

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Posted 26 July 2007 - 04:13 PM

i do a weekly 33.333% change of water on my display tanks weekly tongue.gif
and about 40% every 3 or 4 days on my fry tanks

#20 benckie

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Posted 26 July 2007 - 04:14 PM

even better 33.333 r lols




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