Drop checker for Fluval Edge
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > Specific Aspects of a Planted Tank > DIY

Thread Tools Display Modes
Old 03-07-2010, 11:35 PM   #1
Planted Member
Robotguy's Avatar
PTrader: (4/100%)
Join Date: Jan 2010
Location: Sacramento, CA
Posts: 250

Drop checker for Fluval Edge

I was working on a drop checker yesterday for a friend's Fluval Edge, and I started thinking to myself, "How could I take advantage of the unique design of the Edge?" I realized I could make it readable from above, through the clear top of the tank. Additionally, a drop checker is mostly full of air, so it should just float against the glass, no suction cups needed. I came up with the following:

It is just over 1" diameter and 1/2" thick including the 1/8" clear acrylic top. Unfortunately the plastic I had is a bit yellowish, and may skew the color of the drop checker solution a bit. I tried two others using Teflon because it's whiter, but of course I couldn't get any of my glue to stick to the Teflon.

The surface area of the water in the lower section is pi*.447^2=.628 sq inches and the surface area of the test solution is the same minus the area of the riser tube .628-(pi*.125^2)=.579 sq inches. Hopefully this will be enough surface area to get a decently quick reaction time.

Initial tests show that it does float when filled with an appropriate amount of water, but the surface tension in the upper chamber pulls the liquid to the edges, so I may need to make another prototype with a deeper chamber.
Robotguy is offline   Reply With Quote Quick reply to this message

Quick Reply

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Your Location. As precise as you feel comfortable with.
Security Question
While balancing on a piece of wood, two inches by four inches known as a 2x4, John and his friend Sally both spotted a dalmatian inside of a truck with sirens. The animal with John and Sally is a _ _ _?
Please select your insurance company (Optional)


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT. The time now is 12:53 PM.

Powered by vBulletin®
Copyright ©2000 - 2015, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012