Have always wanted to install a live bait tank not only to keep live bait fresh, but to keep keeper fish as fresh as possible, especially on long day fishing trips....I also wanted to remove the very comfy rear lounge seat when i go on fishing trips with more practical seating for two...this also allowed me to put in the old bait board i had.....
The main floor of the boat has an underfloor fuel tank and an esky.....so there was no more room to place a tank in the floor....After careful consideration, i installed the tank in the rear aluminium platform / pod of the boat...
The pod can probably fit 200 litres of water, but i would never ever fill it up as it will dramatically weigh the boat down......40 - 50 litres of water will be more than enough water for the fish i catch...with a 150HP engine, i am not too worried about the extra weight at the back...
Basically what i did was remove the old small round screw on hatch cover (which i could barely get my hand through) and replace it with a rectangular waterproof hatch....I cut out the required hole with a jigsaw and drilled the holes. I then cut out the carpet around the hole to ensure that the hatch fixes to the metal only...cleaned the metal with thinner, siliconed all around and fixed the screws...Although the pod is aluminium, I still sprayed the inside of the tank with a waterproofing / rust agent i bought from Bunnings... .looks great and very practical...I did not install a bilge pump as i didn't really want to drill anymore holes in pod. It doesn't really worry me if a have to fill it up manually with a bucket.....I bought a $15 battery operated aerator which seems to do the job ok...
Question: To keep the fish alive for long periods, do i need to refresh the water regularly or not?
I have attached pictures of the hatch, and the new seating configuration....