SPS and water changes

[121]

How much do you change per week?

I'm wondering how much can be changed in one hit without causing stress and necrosis.

 

[buy_baff]

I change 10% a week. But have done 25% before to make up for skiping a week.

 

[Allmost]

if both old and new water match in parameters, u can do up to 30%.

 

[mike_cmu04]

I do 20% weekly and it has gave me good results and minumum problems

 

[MrKite24]

I do 10% every other week. I've done up to 30% with no problems.

 

[LifeAquatic]

I dont think the water change % effects the coral negatively at all as long as the water is within proper SPS paramaters. Wouldnt you consider bringing a new frag home and placing it in your tank a 100% water change?

 

[Toadally]

I do 10% a week........ 1% per day of total volume. Works very well.

 

[USNzifer]

I do 10% a week....but you can do 100% every single day as long as the new water matches the existing water 100%. I would not advise this but 100% water changes do not hurt a system at all (if ALL parameters match) I have done 100% water changes on my tanks when moving locations with no problems at all....

 

[Dustin1300]

I have a 95-100 gallon system and do 8 Liters a day (2.113 Gallons) using my LiterMeter III with the water exchange module. At 100 gallons that's 2.11% a day and 14.79% a week. With the LMIII it does this 150 times throughout the day so it makes for the most stable changes possible....Really slick system!

 

[Bugzme]

I do 15% every other week

 

[Ken Good]

I do 20% once every three to four weeks.

Ken

 

[dan223]

If parameters are the same you should be able to do as much as you want, even 50% or 100%. If the alk, cal, temp and salinity are the same why would it matter?
If suppose if you had nutrient issues a drastic drop could cause stress.