Water Change amount question

Budman's Corals · Feb 23, 2013

okay ,Just curious,Would 5 gallons a week really do any good for a 120 with a 30g sump..or is better to do a 15g every 2 weeks,

What do people think.The only reason i would do 5g a week cause it would be easy and take like 10 minutes...
Thanks for any input

Pappy · Feb 23, 2013

10% weekly or 20% biweekly is the rule of thumb I believe. So 12 gallons weekly or 25 biweekly would be my suggestion.

mike007 · Feb 23, 2013

I do 20% once a month and everything seems to fine.

Budman's Corals · Feb 23, 2013

mike007 said:
I do 20% once a month and everything seems to fine.

thats what i was thinking 20 gallons a month or 5g a week,but im thinking 5 gallons wouldn't do anything as in trace elements or taking out Phos..

which i have been doing 10% every 2 weeks which is about 15g and my Phos stay below .05,

Im just trying different stuff..

Budman's Corals · Feb 23, 2013

Pappy said:
10% weekly or 20% biweekly is the rule of thumb I believe. So 12 gallons weekly or 25 biweekly would be my suggestion.

thats 50 g a month,Id be broke buying salt,LOL

I guess it also depends on how much i feed

Pappy · Feb 23, 2013

Shoot I'm doing 20% a week but that's just me. If your parameters are all staying stable then you're good. If you're getting good growth, low nitrates, etc...then stick to what you're doing. I have soooooo many sps and high end stuff I just don't wanna risk the chance of a tank crash. The way I look at it is $50 for 200 gallons of salt mix or lose multiple pieces valued at way over that.

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Budman's Corals · Feb 23, 2013

Pappy said:
Shoot I'm doing 20% a week but that's just me. If your parameters are all staying stable then you're good. If you're getting good growth, low nitrates, etc...then stick to what you're doing. I have soooooo many sps and high end stuff I just don't wanna risk the chance of a tank crash. The way I look at it is $50 for 200 gallons of salt mix or lose multiple pieces valued at way over that.

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oh i see your point of view now...I only have a couple sps mostly lps which 50 bucks isnt bad for 200 g of reef crystals..i think thats the most expensive overhead in this hobby