First Water Change

illinoisreefer · Oct 28, 2020

My tank just completed its cycle and my LFS is recommending a 20% water change on my 32.5 gallon tank (26 gallons of water volume), and then repeating that weekly. With my previous tank I always went with 10% weekly. What say you fellow reefers?

Pistol Peet · Oct 28, 2020

illinoisreefer said:
My tank just completed its cycle and my LFS is recommending a 20% water change on my 32.5 gallon tank (26 gallons of water volume), and then repeating that weekly. With my previous tank I always went with 10% weekly. What say you fellow reefers?

10 to 20% is standard

illinoisreefer · Oct 28, 2020

Pistol Peet said:
10 to 20% is standard

So no real difference? What is your weekly preference?

josephxsxn · Oct 28, 2020

illinoisreefer said:
So no real difference? What is your weekly preference?

I only do about 10% but that is around 20 gallons

for me.

Pistol Peet · Oct 28, 2020

illinoisreefer said:
So no real difference? What is your weekly preference?

I do 20% water change but I have a 160 gallon. and now I think your tank probably go with a 10%

MERKEY · Oct 28, 2020

Each tank is different and the elements you are replacing may only need a %10 change to refill them.

I'd do a 20% for the 1st one and then figure out where you want your numbers and see what a %10 and %20 change does to figure out what works best for you.

A %10 change in 26g of water may be more than enough

If it helps we do around a 25g weekly on a 220.

najer · Oct 28, 2020

People still do waterchanges?!

I would say 10% for your water volume plus it is a new tank, you will be removing 20% of good things in the water as well.

Miguel Negron · Oct 28, 2020

10% at first, you don’t want too clean of a tank

Thatdude156 · Nov 29, 2020

Miguel Negron said:
10% at first, you don’t want too clean of a tank

Sorry to thread jack, but what if nitrates are 20 and you have fish only?

Uncle99 · Nov 29, 2020

illinoisreefer said:
My tank just completed its cycle and my LFS is recommending a 20% water change on my 32.5 gallon tank (26 gallons of water volume), and then repeating that weekly. With my previous tank I always went with 10% weekly. What say you fellow reefers?

I’d say that advice is fine.
The good bacteria is stuck to the hard surfaces anyways.
After cycle, I did 50% to get nitrates down a bit.