 |
08-10-2008, 04:29 PM
|
#1
|
|
AA Team Emeritus
Join Date: Jul 2007
Location: Southern California
Posts: 1,649
|
PH & ALK of Top off water
Do you dose anything to bring up the PH or alk of your RO/ DI water used for top off?
__________________
|
|
|
|
08-10-2008, 06:11 PM
|
#2
|
|
SW REEF 20+ YEARS
Community Admin
Join Date: Oct 2004
Location: Virginia
Posts: 39,145
|
I dont dose for that. Mine stays pretty much on target with just weekly PWC`s. Where is your`s at that you think you need to dose for?
|
|
|
|
|
08-10-2008, 06:18 PM
|
#3
|
|
AA Team Emeritus
Join Date: Jul 2007
Location: Southern California
Posts: 1,649
|
My top off water alk is 3 and ph is around 7. I was just curious if people bring the ro/ di number up closer to the tanks numbers or just leave them be.
__________________
|
|
|
|
|
08-10-2008, 09:38 PM
|
#4
|
|
SW REEF 20+ YEARS
Community Admin
Join Date: Oct 2004
Location: Virginia
Posts: 39,145
|
As far as the PH that seems right for FW. You`ll get the desired 8.2 - 8.4 when you mix in the salt mix for PWC`s. What is your alk and PH on freshly made SW and your tank water. Just wondering
|
|
|
|
|
08-10-2008, 10:24 PM
|
#5
|
|
AA Team Emeritus
Join Date: Mar 2006
Posts: 13,858
|
I pre mix my PWC and use a ph to adjust the pH of that water....not sure about Alk.
|
|
|
|
|
08-10-2008, 11:24 PM
|
#6
|
|
AA Team Emeritus
Join Date: Jul 2007
Location: Southern California
Posts: 1,649
|
I was referring to the RO/ DI top off water that goes in the tank to replace evaporated water. Do you typically bring the PH or ALK up on that? My tank water has a PH of 8.0 - 8.3
I was just thinking maybe it would be more stable if my top off water had a higher PH and ALK.
__________________
|
|
|
|
|
08-11-2008, 12:18 AM
|
#7
|
|
AA Team Emeritus
Join Date: Aug 2006
Location: Seattle-ish, WA
Posts: 5,340
|
I don't do anything to my DI water for top offs. My pH and alk are very stable from day to day, though I do dose a 2-part for ca/ alk every day.
__________________
|
|
|
|
|
08-11-2008, 08:18 AM
|
#8
|
|
SW 20 & Over Club
Join Date: Mar 2004
Location: Northeast PA
Posts: 5,365
|
If you buffer your top off water, it's like dosing alk into your tank. When water evaporates, I don't think the sodium carbonate evaporates with it. I would think buffering top off water can easily throw your alk/ ca balance out of whack.
|
|
|
|
|
08-11-2008, 08:50 AM
|
#9
|
|
AA Team Emeritus
Join Date: Jul 2007
Location: Southern California
Posts: 1,649
|
Thanks, I'll keep doing what I have been doing then which is leave the top off water as is, and dose the tank for alk and calcium
__________________
|
|
|
|
|
08-11-2008, 12:39 PM
|
#10
|
|
SW REEF 20+ YEARS
Community Admin
Join Date: Oct 2004
Location: Virginia
Posts: 39,145
|
That`s a good idea. I dont do anything to my top off water either.
|
|
|
|
|
08-14-2008, 09:44 AM
|
#11
|
|
Aquarium Advice Freak
Join Date: Feb 2008
Location: Wyoming
Posts: 203
|
Roka, what do you dose with? Are you dosing to raise or lower?
I hate to high jack the thread here, but I have noticed that my Ph has been slowly creeping lower and lower. Last night it was 7.9! I have been researching and there is lots of info about why Ph goes up, but not why it drops. I have been blaming it on some macro algae I got last month. Can anyone suggest reading on how to raise ph and what causes it to go low? I have been adding more an more coral too. Could that be it?
__________________
72 gallon bow front, koralia 1 powerhead, approx 30 gallon sump and separate 20 gallon display refugium, Aqua C protein skimmer, Live rubble filteration, 80 # of LR, and a 4 inch sand bed. 
|
|
|
|
|
08-14-2008, 09:50 AM
|
#12
|
|
SW 20 & Over Club
Join Date: Mar 2004
Location: Northeast PA
Posts: 5,365
|
Low pH: Causes & Cures by Randy Holmes-Farley
|
|
|
|
|
08-14-2008, 11:25 AM
|
#13
|
|
AA Team Emeritus
Join Date: Mar 2006
Posts: 13,858
|
More surface ripple will help to raise the pH. I don't dose my tank with anything, just pre mix my water and use a ph to get the correct pH as my tank.
|
|
|
|
|
08-14-2008, 11:43 AM
|
#14
|
|
Aquarium Advice Freak
Join Date: Feb 2008
Location: Wyoming
Posts: 203
|
Roka, Oh, I misunderstood you. Thanks for clarifying, I do that too. I thought that the increased surface ripple decreased your Ph?
cccapt, Thanks for the article that is exactly what I was looking for. I will read it this evening.
__________________
72 gallon bow front, koralia 1 powerhead, approx 30 gallon sump and separate 20 gallon display refugium, Aqua C protein skimmer, Live rubble filteration, 80 # of LR, and a 4 inch sand bed.
|
|
|
|
|
08-14-2008, 11:53 AM
|
#15
|
|
AA Team Emeritus
Join Date: Mar 2006
Posts: 13,858
|
The more surface ripple, the more O2 exchange, thus the higher pH.
|
|
|
|
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
 Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Vendor Spotlight (Deals & More) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
» Photo Contest Winners |
|
|
» Saltwater Discussions |
|
|
|
|
|
|
|
|
|
|
|
» Freshwater Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
» Other Discussions & Classifieds |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
