Dosing all for reef, water change necessary?

BRS

rueric

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Apr 2, 2021
Messages
81
Reaction score
22
Review score
+0 /0 /-0
Location
Earth
Hi,

I'm running a 32g fluval flex with coral and some fish.
I've finally got some fish in there (ran fallow until quarantine was complete) to raise my nitrate and phosphates past 0 for the first time since setting up the tank 3 months ago.
I have dragons breath algae slowly growing in the display as well.

With my nitrates at 3.5 and phosphates reading 0.06 (Hanna Nitrate HR and Hanna phosphate ULR)
Also dosing all for reef for my major and minor trace elements..
According to my test results from my weekly testing
Alk = 9.5
Calc = 436
Nitrate = 3.5
Phosphate = 0.06
pH = daily fluctuations of 8.0 - 8.2
Temp stable at 78

Question is, do I need water changes?
My understanding of the standard 10% water change weekly or 20% every two weeks is to replace major and minor trace elements and also remove nutrients like nitrate and phosphate from the system..

Since everything is stable and nitrates remain low and the replenishment of elements using all for reef.. are water changes necessary?
 

blaxsun

5000 Club Member
Review score
+0 /0 /-0
View Badges
Joined
Dec 15, 2020
Messages
5,337
Reaction score
4,523
Review score
+0 /0 /-0
Location
Saskatchewan
The standard can vary (10% every 2 weeks is also common), but yes - water changes on smaller tanks is recommended as they can easily tip out of balance much more quickly than larger systems.

If you’re dosing you may be able to get away with less frequent water changes, but you’ll need to continue testing to ensure your levels remain consistent. You may also find that as you add more fish, corals and inverts that you need more frequent water changes to keep everything balanced.

Without knowing what you have for filtration, biomedia, etc. it’s hard to speculate how frequently you’ll need to change your water, but accessories like protein skimmers can also really help.
 
OP
R

rueric

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Apr 2, 2021
Messages
81
Reaction score
22
Review score
+0 /0 /-0
Location
Earth
Since I've been struggling to get any nitrates and phosphates, I turned off my protein skimmer a long time ago..
I do plan to continue my weekly testing. The only thing I'm not testing for is magnesium
The one concern I have is with the trace elements.. From my understanding, AFR should contain almost everything.. but are there any elements that AFR won't replace compared to a water change?
 

PeterC99

Can’t Remember What I Did Before Reefing?
Review score
+1 /0 /-0
View Badges
Joined
Aug 28, 2020
Messages
3,552
Reaction score
14,822
Review score
+1 /0 /-0
Location
White Plains, NY
TM AFR will replace most everything that a water change will replace. The only difference is that you are pulling out some bad things like NO3 & PO4 with the water change.
 
Last edited:
Zoanthids
OP
R

rueric

Community Member
Review score
+0 /0 /-0
View Badges
Joined
Apr 2, 2021
Messages
81
Reaction score
22
Review score
+0 /0 /-0
Location
Earth
TM AFR will replace everything that a water change will replace. The only difference is that you are pulling out some bad things like NO3 & PO4 with the water change.
So as long as my nitrate and phosphates are in check.. really no need to water changes
 

PeterC99

Can’t Remember What I Did Before Reefing?
Review score
+1 /0 /-0
View Badges
Joined
Aug 28, 2020
Messages
3,552
Reaction score
14,822
Review score
+1 /0 /-0
Location
White Plains, NY
BRS

Have you noticed any changes in the color of your coral based on how you feed your tank?

  • YES (tell us in the thread)

    Votes: 68 40.0%
  • NO

    Votes: 92 54.1%
  • Other (please explain)

    Votes: 10 5.9%

New Posts

Chemi-pure.com - All-In-One Aquarium Filtration
Top