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How to check for deadspots with no co2

DaveWatkin

Member
Joined
26 Oct 2020
Messages
151
Location
Aberdeen, UK
Anyone got a good method of monitoring circulation in none co2 tanks? Would normally watch the bubbles for this, is there any inert dyes or anything that can be used?
 

ian_m

Global Moderator
UKAPS Team
Joined
25 Jan 2012
Messages
5,236
Location
Eastleigh
I tied my drop checker, with a short length of string to a stone, so it could be moved around the middle of the tank, rather then be just stuck to the glass. Using my 1500l/hr filter + internal 600l/hr filter in a 180l tank I found spots where the drop checker was still blue(ish) when lights came on, compared to a nice green/yellow in other parts of the tank.

A 3200l/hr power head fixed that issue.
 

Hufsa

Member
Joined
22 Aug 2019
Messages
431
Location
-
You could add a little bit of Calcium / remineralizer to the outlet to get a fog to follow around. A little of this goes a long way.
Otherwise I have also used fine grained food or a fine bubbled / wood airstone placed under the outlet with good effect
 
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