4Dkh-Drop Checker

SLIM

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Hiya everyone

Iv just arrived back home today from a great well needed week away.

Before i left i did a 50% water change, dosed my tank a whole weeks worth of micros and macros, turned my co2 off and set my lights to come on for just 4 hours a day.
Arrived home today and my tank looks great, like a jungle! Everythings grown like mental!

Whats interesting is my drop checker is still showing 30ppm of co2 even tho my co2 has been off for a week :/
I knew straight away something wasnt right :no:

If i take the drop checker out the water it does start to turn blue.

The first thing i thought of was to test my 4DHK solution with my API KH Test kit.
Iv never done this before as i just assumed my 4DKH would be correctly mixed.

Anyway, Interestingly enough it took 6 drops to turn yellow not 4. So i have 6DKH solution not 4?????

What does this mean? Have i been underdosing co2 this whole time if i have indeed been using 6DKH solution?
Would this explain why my drop checker is showing lime green with no co2??

Thanx for any help

SLIM
 
Are you making your own 4dkH or buying it? How often do you change the solution in the dropchecker?

L
 
Are you making your own 4dkH or buying it? How often do you change the solution in the dropchecker?

L
I bought it on ebay and i change weekly with waterchanges.
 
Same bottle all this time? Maybe a bad batch of 4dkH. Who's the seller? A company or a private seller?
 

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