Clown Loach spawning

[Tinman]

A pressure gauge could be hard piped to the base of the tank and this tracked.This could be a solid state device in a well very simply like a ph meter......
This is very good work CK.
When a flood moves through in the rainy season the river will move across the plain and be much shallower over the grass type vegatation or ph lowering source of additional plant material introduced to the stream besides source waters etc......

[andre]

Hi Chef

Your post has left me skeptical as IMO the effect of air pressure below the water is negligible.

However I recently witnessed kubs behaving strangely and that happened on two consecutive Sundays after a heavy a water change. But that was it. Although I replicated the same conditions several times nothing happened again.

As a matter of curiosity I went to see what the air pressure was on those Sundays (7 and 14/10). Remarkably I noticed that the pressure was exactly the same, raising after a deep fall (see black dots on the graph).

I'm far to be convinced but I think that you raised an intriguing issue.

Just in case you are right I'm going to patent the first pressurised water tank... $$$

[chefkeith]

That is really good idea Tinman.

Hi Andre,
I was thinking the same thing about air pressure being negligible under the water's surface, but after I done the math I thought differently. I double checked the calculations. The calculator I used can be found here-

http://www.convert-me.com/en/convert/pressure

Also, I found some pressure data from Cape Town that is a little different than what you found. The pressure did skyrocket on those particular dates. It would be nice to have more spawning dates to see if there is a pattern at all.

http://www.wunderground.com/history/sta ... story.html

[andre]

Also, I found some pressure data from Cape Town that is a little different than what you found.

Hi Chef, I'm actually in Stellenbosch which is about 60Km from CT. The station I checked is about 2km from where I live

Have a great day!

[Colin]

Hi keith

interesting stuff! Many experienced fish breeders I know will check the weather during after a spawning to see if there were any changes, most notably thunderstorms etc.

The lunar cycle is also one to check. I spawned European cuttlefish and although the male couldnt actually see the moon he always came into breeding colours the few days either side of the full moon.

My shed is on a timer system for lights and that has been constant for over a year.

Stirling is about 30 miles away.

The only parameter I dont check is O2

I had fully intended to be extra vigilent around the tank when it gets to the month mark from the original date i seen them cruising the tank...

cheers

[mickthefish]

hi colin
i know of one guy who takes readings such as what youve said,
he breeds quite a few L number cats and some of the cory species.
in the fish clubs i'm in some of us know if there's a electrical storm iminent the fish all get their acts together and start spawning.

mick

[Colin]

Hey Mick

yeah, I think there is definety a lot to be said about that. I guess weather loaches are the obvious example but it makes sense that seasonal spawners will wait until the right time with the right conditions.

The BBC weather website gives pressure readings due for 5 days in advance... Sunday is set to take a dip

[Munkee]

All I can say is good on you Colin! What an amazing thing, duds or not, this is truly a great step forward.

I hope if you can do this again, you'll keep us posted. Also I shared this topic with another community I belong to. I am sure there are countless others out there, who would love to see your story and photos.