Jecod CP-40 hacking and DIY controller reverse engeneering

I just picked up a Jacod CP-40 gyre but was disappointing to see that the jabeo > apex connector does not work with this unit.. In efforts to figure out a way to work the signal and make my own i decided to do a little reverse engendering and see how it worked.. No keep in mind i’m still learning to use my oscilloscope.. this may be a bit of a leap for me.. but hey its a good time to learn!


The connector wiring












Backside of controller


front side of controller




Oscilloscope testing
Yellow line is the yellow wire. Blue is brown wire.

Mode: H1 (constant speed)
Intensity: Lowest
CSV Filecp40-H1-lowspeed

Mode: H1 (constant speed)
Intensity: Full Speed
CSV File



Mode: W1 (short pulse Wave mode)
Intensity: Low speed
CSV File



Mode: W1 (short pulse Wave mode)
Intensity: Full Speed
CSV Filecp40-w1-fullspeed


Mode: W3 (fixed forumla wave)
Intensity: low
CSV Filecp40-w3-low


Mode: W3 (fixed forumla wave)
Intensity: full
CSV Filecp40-w3-fullspeed

DIY magnetic Kalk stirrer 


Magnetic stirrers are one of the simplest ways to build a DIY Kalk stirrer. I used an old reactor with a missing lid for the tube. You could also just use PVC or an acrylic tube.  For the used a hole saw and made a hole in the centre of a square of acrylic and bonded it to the tube. I sandwiches some rubber beteeeen a second price and drilled holes for nylon wing nuts   The rubber in the middle seals the lid
The base is a square of acrylic to hold a 120mm PC fan.  I did have to shave a few mm off the side of the fan to make it fit.  I glued a rare earth magnet to the centr of the fan and aligned it a few mm below the top of the frame to ensure it can spin freely

Inside the reactor be sure to put a piece of glass on the bottom to prevent the internal stir bar from wearing through the acrylic over time


DIY magnetic doser stand


Having a steel stand makes it a little hard to add on.. Well that is if you don’t use magnets!  I have been using strong magnets to mount all kinds of stuff inside my stand including my Jabeo doser 
I vent a price of acrylic by claiming it beteeeen 2 prices of wood and going over the edge with a heat Gun. I then used drywall plugs into the space between magnets in a magnetic strip bar and used screws to attach the two together 

The magnetic strip came from princess auto and was about $15. The acrylic I had laying around so all in all it was a pretty cheap project and looks great


Shallow Reef build Part 2

Something magical happneed… I got a call saying my tank was done!  After planning this upgrade for close to six months i was extatic to see my project coming to life.

A few buddies showed up to help with the move (thanks guys!).  It showed in a big wodden crate with the stand bolted to the top.. The tank it self was sealted tight like a mummy in a vault.. There must have been 600 nails on that crate…. Opening it was another challenage.  The first half to process involved hammers and pry bars trying to seperate the wood…. after slow progress i busted out the reciprocating saw and begun cutting the support posts… eventually we were in!


The tank was faily heavy but manageable.  I pre cut carpet to put under the stand which made it moveable (prior to filling).. this was great as it allowed me to tweak its position,  slide it out to put black vinyl on the back and make sure it was perfectly level

The tank it self is 3 sides starfire… it will eventually turn into a peninsula uptop the stairs but for the next year or two it will be down here against the wall.

With the tank in its temporary home I picked up some 3/4 plywood to build a sump stand and build my sump space.







How to clean dry or used sand for your reef


Dry sand can be full of dust and cloud your tank for days.  Used sand can be full of detritus and bad stuff that you probably don’t want to add into your tank. If you are using either of theses sands its best to give them a real good rinse prior to use. The easiest way is to pour your sand into a 5g bucket and push the garden hose all the way down to the bottom. Turn your hose on full and let the water work its way and and bring the little particles with it.  You can swish it around and mix it up or just let it run. I any take a good 20 minutes with the water running so you mind as well do it in the middle of your lawn so it gets a good watering! 

Once the water runs clear you will want to ensue the sand is fully dried prior to adding to your tank.  
Spread your sand out on a tarp and let it bask in the sun until dry and your good to go. 

16g Desktop Nuvo 16 shrimp tank

A few updates photos of my planted innovative Marie fusion 16 crystal shrimp tank. The tank used is actually a marine tank. I used stainless mesh on the overflows to help keep the shrimp out. The beauty of a marine tank is you can hide your filers and heaters in the rear sump and keep the display clutter free 

$30 DIY Media Reactor



For a couple hours and $30 you can build your self a custom GFO, carbon, or bio pellet reactor! After searching for reactors and being shocked how they can cost upwaords of 150-200$ for a tube i decided to try and build my own.. while in the dollar store i noticed a $3 glass pasta jar that was the perfect size for a reactor. The hardest part was finding the little bulkhead style pipe.. I found these lovely little bits at home hardware.  The circular mesh came from michales.  The red pvc i already had laying around.

One word of warning. The lids tend to be a bit thinner so be careful not to force and fittings as it may crack the lid.  I remedied this buy laying down a layer of epoxy (poly urathane) overtop of the lid to bond the cracsks and seal it all together.. If you drill it successffuly with out cracking it then i’m sure you can skip this step unless you want to strengthen the lid.  Either way its fairly low pressure inside and should not be an issue.

If using this as a diy carbon reactor I would use the sponges above and below to hold the carbon tightly and prevent tumbling.

If doing a DIY GFO reactor leave space above the gfo and adjust your flow so that the top just simmers.. you want some movement in the gfo doesnt bond together.
for DIY Bio pellet reactors just use the mesh screen and have high flow so the bio pellets are continuously churning in the chamber.


Parts List

1x Glass Pasta Jar with plastic lid ($3 at dollarrama)
2x 1/2″ Flexible Elbow Conduit ($4.99 Item #3622-681 at home hardware)
1x Water Filter Head Seal Gasket ($6.20 Item #3115-809 at home hardware) part may vary depending on jar
1x Schedule 40 1/2″ Slip PVC Cap (0.79 cents at home hardware Item #3262-631)
1x Schedule 40 1/2″ Slip x Female Imperial Pipe PVC Adapter ($0.99 at home hardware Item #3262-301)
1x pack of 4.5″ mesh circles ($2.99 at Michaels crafts)
1x length of PVC – size depends on your juar
1x can of krylon fusion in your color of choice to make it look pretty. ($6.99 at Canadian tire)
1x epoxy of choice… if you happen to crack the lid while drilling 😉   … Pro tip! make sure the hole is big enough (5/8″ i believe…) my step drill bit only wen to 1/2″ ish which was a tad small.. i tired to force screw it in which caused the thinner lid to crack.

Coral collection

I decided to make a database of all my corals so I could keep track of them.i have tons and forget the names of half of them so I’ll fill in the list with names and photos as I figure them out

Neon green birdsnest



Neon green favia 

Dragon soul favia 

Pink hippo Zoa 

Radioactive dragons eye Zoa

African hornets Zoa

Utter chaos Zoa

Fire and ice Zoa 

Aussie like green

Purple bonsai sps

Rainbow monti

Neon green monti 
Miami Hurricane Chalice

Mars Sunset chalice

Alien Eye Chalice

Orange #1 chalice

Orange #2 chalice 

Purple/blue green eye chalice 

Green pink eye chalice 

Volcanic Frost Rhodactis Mushroom

Grande Cinnamon Paly

Red Rock Flower Anemone

Seafoam Paly (not the real name of them just what color they were in my tank)

Australian Hornet Zoas

Assorted Color Florida Ricordeas (Floridas 

1 2 3 5