I am planning to use sheets of 4 mm polycarbonate greenhouse panels that I can place on my tubs if there is a forecast for heavy rain or a sudden cold spell. They are cheap, durable and easy to cut to size. I think that the heavy rainfall suddenly changes water parameters like ph and hardness and that is what might kill the fish.
@km-qh3rs2 ай бұрын
I already have rigid plastic sheets to cover the tubs in cold weather ..... however it would be impratical to try to use these temporary measures to protect the tubs from intense, heavy rain in tropical type of summer rainstorms that may go on for hours and/or may occur almost every day for a couple of weeks. I'm going to have to install something more permanent to provide the sort of protection I think is necessary if I'm to avoid simialr heavy losses of medaka in future. I already have a video about effects of rain on water parameters and I think that is manageable, but I had not considered the adverse physical effects of long periods of intense, very heavy rain hammering down on the water surface of relatively shallow tubs. It only occurred to me after I came back from vacation and found the 50% losses of my medaka. I then went and stood outdoors in such intense rainfall and saw the large amount of turbulance that occurred in my 30cm deep tubs. Undoubtedly the medaka would have been battered about quite severely ..... although maybe not so much of a problem with, say, 60cm deep tubs. Also I assume it would not be so much of a problem in temperate climates where intense rain storms only occur infrequently.
@Gandalf-The-Green2 ай бұрын
@@km-qh3rs thank you for your reply, I am really learning new things constantly from your videos!
@gayefanner7312 ай бұрын
Very tough lessons but you certainly learned a lot and presented your conclusions very clearly. I love to hear you talking and wonder what was your field, prior to retirement ?! God bless you and your endeavours 🙏✝️. ✌️🇷🇺☮️🇺🇦✌️. 🙋♀️🤍🇮🇱✌️
@km-qh3rs2 ай бұрын
Thanks. A civil engineer ..... always long-winded but usually not known for eloquence. The video was getting longer and longer ..... so I didn't include the bit where I was going to say that previously my medaka project was on a smaller scale. As such, at the start of summer last year, 2023, I think I had no more than 8 to10 elderly adults and maybe 70 young adults that had hatched in early spring 2023. I can't really remember but if, similar to this year, all the elderly adults had died and most of the strong young adults survived during the summer ..... then the impact of % total loss would not have been noticeable. But this year, starting the summer with maybe 40 elderly adults, 80 strong young adults hatched in early spring and 80 weaker juveniles hatched in late spring ..... then, in addition to the dragonfly losses, with all the elderly adults and a high proportion of the weaker juveniles dying it greatly increased the % total loss and the impact of that really made me think very hard.
@gayefanner7312 ай бұрын
@@km-qh3rs Thank you, n so glad you’re keeping on and improving your setup. It’s very interesting to us, given the lack of Medaka info around and you put it over in a lovely relaxed , informal way 🤝
@km-qh3rs2 ай бұрын
@@gayefanner731 Thanks, I'm surprised that after 36 videos I'm still finding things to talk about.
@4doorvip2 ай бұрын
is that galvanized pipe in the tanks? If so it can cause zinc issues for fish
@km-qh3rsАй бұрын
Hi, those are lengths of small diameter pvc pipe I use as floating barriers to keep the floating plants in check. I stuff closed cell foam into the pvc pipes so that they float.