water changes

gord 23 · 12/19/2018, 07:14 PM

If I have RO water access how often should I do water changes and how much per change? This is for a lightly stocked 75 gal salt tank.

mcgyvr · 12/19/2018, 07:31 PM

Answered here..
http://www.reefcentral.com/forums/sh....php?t=2688513
No need to double post around here..

Seasidenj · 12/20/2018, 08:05 AM

Must of us do a 10 percent water change a week

RobZilla04 · 12/20/2018, 08:19 AM

90g here with 15g WC every other week. Occasionally I do a 20g if I'm feeling froggy.

reeftivo · 12/20/2018, 02:19 PM

10% when on weekly schedule. 15% when i get thrown off a bit due to work, family and vacations.

candymancan · 12/21/2018, 12:18 AM

My 60g hex i do 0 water changes. I did 0 when it was on my 27g hex as well, its packed with small corals as well. My tank is a basic tank, no protien skimmer, no canister, no overflow, no sump. Just a HOB, little surface eheim surface skimmer for the oil/protein layer the surface can get. and a bunch of power heads.

The only "advanced" thing i have for the tank would be the 4 liter reactor packed with seachem denitrate and matrix. I guess you could call it a homemade canister. Its connected to my 20 year old eheim 1060 ? pond pump, and the outflow is only 40gph tops. I have that connected to a 36w UV sterilizer. The denitrate keeps my nitrates at 0-10ppm depending how much i feed.

I havent had any corals die, in fact my acro's, zoas, monti's and so forth are all growing well. No issues with the fish either, my phosphates are about 0.25ppm.

I honestly havent been doing this very long but I dont think 0 00 0 0 0 0 everything is really needed for a reef. I noticed doing re-search that alot of successful well known tanks and even big aquariums you visit have nitrates and phosphates. People have noticed corals do better with some then without. So im not gonna bother with expensive equipment.

As for the water changes, unless my calcium and alk goes to 9 or under i wont bother with water changes, i have seachem 2 step dosing and ill just use that. And i have seachems purigen.

I know reefers are concerned with TDS, but until my corals or fish tell me otherwise ill save my money on salt.

My other tank has no way to remove nitrates so they build up, it has no corals just fish so ill do like a 50% water change if the nitrates get too high

12/19/2018, 07:14 PM	#1
gord 23 Registered Member Join Date: Mar 2009 Location: N iowa Posts: 19	water changes If I have RO water access how often should I do water changes and how much per change? This is for a lightly stocked 75 gal salt tank.

12/19/2018, 07:31 PM	#2
mcgyvr Registered Member Join Date: Sep 2003 Location: North Carolina Posts: 20,050	Answered here.. http://www.reefcentral.com/forums/sh....php?t=2688513 No need to double post around here.. __________________ Who me?

12/20/2018, 08:19 AM	#4
RobZilla04 Registered Member Join Date: Sep 2016 Location: St. Augustine, FL Posts: 1,857	90g here with 15g WC every other week. Occasionally I do a 20g if I'm feeling froggy. __________________ 90g Mixed Reef

12/20/2018, 02:19 PM	#5
reeftivo Skim junkie Join Date: May 2008 Location: chino, CA Posts: 3,417	10% when on weekly schedule. 15% when i get thrown off a bit due to work, family and vacations. __________________ I told you not to be stupid you moron!(Stern) Current Tank Info: 60 gal cube/20g tideline sump-mixed reef, Aquamaxx c-tech Ca Rx, Akula 160 skimmer, paxbellum N18, mitras LX7 lighting with T-5s, apex controller

12/20/2018, 08:05 AM	#3
Seasidenj Registered Member Join Date: Mar 2017 Posts: 55	Must of us do a 10 percent water change a week

12/21/2018, 12:18 AM	#6
candymancan Registered Member. Join Date: Aug 2013 Posts: 124	My 60g hex i do 0 water changes. I did 0 when it was on my 27g hex as well, its packed with small corals as well. My tank is a basic tank, no protien skimmer, no canister, no overflow, no sump. Just a HOB, little surface eheim surface skimmer for the oil/protein layer the surface can get. and a bunch of power heads. The only "advanced" thing i have for the tank would be the 4 liter reactor packed with seachem denitrate and matrix. I guess you could call it a homemade canister. Its connected to my 20 year old eheim 1060 ? pond pump, and the outflow is only 40gph tops. I have that connected to a 36w UV sterilizer. The denitrate keeps my nitrates at 0-10ppm depending how much i feed. I havent had any corals die, in fact my acro's, zoas, monti's and so forth are all growing well. No issues with the fish either, my phosphates are about 0.25ppm. I honestly havent been doing this very long but I dont think 0 00 0 0 0 0 everything is really needed for a reef. I noticed doing re-search that alot of successful well known tanks and even big aquariums you visit have nitrates and phosphates. People have noticed corals do better with some then without. So im not gonna bother with expensive equipment. As for the water changes, unless my calcium and alk goes to 9 or under i wont bother with water changes, i have seachem 2 step dosing and ill just use that. And i have seachems purigen. I know reefers are concerned with TDS, but until my corals or fish tell me otherwise ill save my money on salt. My other tank has no way to remove nitrates so they build up, it has no corals just fish so ill do like a 50% water change if the nitrates get too high