TDS measurement

DGreen

Member
May 15, 2013
31
0
6
Melbourne
Honestly I just picked one and payed for it there must have been 50+ on eBay so I will have to wait till it arrives to know which one i purchased as I can't remember
 

Brengun

Global Moderators
Staff member
Apr 22, 2009
5,041
4
38
61
Burrum Heads, Queensland, Australia
Sometimes I will use a TDS pen when wanting to know does a tank need a wc right now or can I leave it a bit longer. Does save doing those Nitrate tests especially if there are several tanks in question.
 

Irene0100

UK Support Team
May 14, 2009
4,271
0
36
Norfolk, UK
guess that may depend on what is in the tank, eg fry, juvs, adults or adults that you are trying to get to spawn. i try not to go over 350 tds generallt but lower in breeding tanks.
 

Brengun

Global Moderators
Staff member
Apr 22, 2009
5,041
4
38
61
Burrum Heads, Queensland, Australia
It does depend on what your regular water readings usually are. I use all rainwater plus buffers. If my tank go's a fair bit over 200 I do a water change. If its still sitting under 200 and my ph is stable I will leave it.
 

Nat's Fish

Member
Nov 14, 2011
514
1
16
How accurate to people find the digital PH pens?
I just got one on ebay for only $15 on ebay from an aussie seller and am wondering if anyone else has used them? The same models have been sold on here too