Simple Glass Drop checker to display current PH and there fore CO2 content of the aquarium.

Blue = Low CO2 Green = Good CO2 Levels Yellow / Lime = High CO2

Photo is of one showing ok CO2 / PH in one of my planted tanks.

This listing is for a complete kit consisting of...

Glass Drop Checker 100ml of 4 dKh distilled water ph indicator solution

I also have drop checkers only if you want to mix up your own reference solutions.

For a short article on why you need 4dKh reference solution and how the drop checker actually works check out this link...

http://mikesaquatics.co.nz/?page_id=62

mikesaquatics

++Shipping++

I DO NOT SHIP PLANTS/ SNAILS ON FRI OR SAT, SO PURCHASES ON THUR, FRI, SAT, SUN GO OUT THE FOLLOWING MONDAY

I ship PLANTS NZ WIDE using NZ Post Parcel Post Overnight Courier Non Signature (Yellow Ticket). (1-2 Days) Everything else goes NZ Post Parcel Post 2-3 Day service. As per NZ Post T&C These times are not guaranteed and Rural Delivery will take longer.

I DO NOT CHARGE EXTRA FOR RURAL I DON'T DO PICKUPS SHIPPED ONLY

++COMBINED SHIPPING++ OPTION IS ONLY AVAILABLE IF FULL SHIPPING HAS BEEN PAID ON ANOTHER AUCTION