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One from the weekend after the heatwave.

I would defo have a rod on any source of aeration tbf.

A lake I fish has several lake bed aerators and it does produce a current almost similar to a river and the fish do feed just downstream of them. They also have 2 large water fountains that run for about 4 hours in the summer mornings and I tend to avoid those areas, it must be like sticking your head in the Marshall stack at a Motorhead concert- -trust me, I've been to one!

Oh poo . Also you impatiently waited all of June ? , to go fishing and then we have a heatwave ! . 😢

Hello Yonny . I was sad to read about your favourite Koi . I seem to remember in hot countries they errect " sails " to provide shade from the sun , and spray water ( in mist form ? ) over the area they want to cool down . Would this be a practicable / too expensive possible solution ?.

Possibly. Since we arrived that fish had always been a little lethargic compared to the others, certainly one of the older ones. In general the younger/smaller koi seem to be dealing with the temps much, much better.

Really sad to hear that mate. Sound like you did everything you could have Could it just be old age, with a fish that size?

Well it was a difficult weekend to say the least. I got the new/additional airlines in on Thursday night before going fishing on Friday night. Both of the fish that were struggling (a 68cm yamabuki (bright yellow/gold common) and a 60cm doitsu kohaku (white/orange mirror)) seemed to improve initially. The fishing was just savage in that heat on Friday so by 9am Saturday morning I was back home to check on the koi. The smaller of the two, the kohaku, was feeding and swimming around like nothing ever happened - a full recovery it seemed, but I couldn't spot the big yamabuki. At 10am, having still not spotted the yamabuki, I started work cleaning the filters. I still had my polarised sunnies on after fishing and I was taking a closer look at the fish from the filter house when I spotted one on its side on the bottom. I knew straight away which one it was and so it proved when I fished it out with the net. One of the best in there and certainly one of the most valuable... the yamabuki.... dead. Digging the grave in 35 degrees was not fun as you can imagine but that paled into insignificance compared to the pain of losing one of my favourite and most valuable koi. I'm a member of several koi pages on social media and it seems all over the country people are losing fish despite following all the right procedures. My water parameters are fine and I have tonnes of oxygen going in. There's not much more I can do. I'm hoping this drop in temps does us all a big favour but I know that we're heading back up to 30 degrees after next weekend. I've increased the frequency of my water changes in an attempt to bring water temps down so that should help a little. So basically it turns out winter is a doddle compared to summer when it comes to keeping koi. I knew that high temps introduce risk for koi but I genuinely thought I was prepared for it. Let's just hope that that's the end of the serious problems.

Water depth and oxygen levels in relation to stress will be an issue in shallow lakes. The mostly deeper lakes on the main continent are not as likely to cause as much stress. Oxygen is not as big an issue in the depths of lakes as it is in shallow waters. Fish can fight themselves almost to death in warm water, and take ages to recover. In theory, yes. Yet every year adults as well as children die in lakes and rivers. A no swimming lake just outside Norwich, a number of deaths related to swimming in hot weather.

I absolutely hate dropping the lead. Despite the theories of reducing the risk of picking up weed, and empty lead clips catches up weed. An zipp or distance inline lead will actually travel through picking up less weed than a lead clip. Again, littering is an issue, just because you can't see it does not mean it is acceptable. I know, stand on the bank of his lake, just throwing leads in. That is exactly what you are doing dropping the lead on every take.

although i do still have my Street Triple, i did buy a sports tourer last year in the form of the Suzuki GSX S1000GX.

Therein are many problems within business and fishing, the need to make money. I've had run-ins in the past with Simon Pomeroy over someone using a huge single hook for pike fishing. He doesn't like people disagreeing with him! I have tried Stonze, in various sizes and they cast like a bag of spanners, more wobble than Jessica Rabbit. For short range fishing, fine. For the potential camouflage aspect, fine. For any distance, yuck. Pushing Dropping the lead was another business invention, the more leads you drop, the more you sell... The original reason for the invention of the Lead Clip was the ease of removing the lead at the end of the session, or changing lead size during the session! It provided a way of being able to fish semi-fixed without attaching tubing over the hooklink swivel, to hold a lead bead in place. Instead of buying 2 items you bought 1. I hate dropping the lead; in most cases there is no need, even in weedy waters. I have fished very weedy waters, and never found the need to drop the lead. Personally I used to use Zipp (Distance) shaped 1oz to 3oz inline leads in weed, and had few problems. As long as the lead has no shoulder, no weed catching. Your hook catches more on the retrieve. Gawd, imagine trying to play a fish through weed with a Stonze inline or not! That's not to say I don't lose leads; a snap-off thanks to pike or swan swimming through the line, an occasional quick clip and the lead pinging off the clip during the fight. However, there is an environmental issue, both as @greekskii says from microplastics, and the amount of lead in various waters, lost or 'dumped' tackle. Dumping the lead is really decriminalised littering, pollution, I do recall something about fishing weights being lead was raised in the EU Parliament. We are not just thinking freshwater fishing here, we have to include sea fishing, both beach, boat and commercial as all use lead weights. There is potential for a ban, and even though we are no longer part of the European Union.

Correct 👆 The guy is trying to get lead banned for one reason only $$$$$$$$$$$$ I disagree with the unnecessary dumping of leads. However, I believe the safest rig is the one that lands the fish safely and efficiently, and on many waters I've fished dumping the lead plays a part in that.

I had a 3 x 3m parasol installed in Feb for this. I have various air supply systems working. Still not enough it seems😩

I mentioned on another thread that over the weekend I did an unsucessful 48 hour session and saw the bailiffs going out in the boat to net dead fish. Unfortunately the lake in question (commercial) had a policy of chucking in a sack of pellets 3 times a week, mainly because another fishery down the road has some larger fish and they were trying to boost the size of their fish.They didn't do it when I was there this time, probably due to the heat but I do wonder if it contributed to them dying.

Just got back from a 48 hour session that was booked months ago and it was pretty grim with sweltering temperatures and little sign of feeding fish. Both mornings the bailiffs were out in the boat scooping up dead fish. I saw one fish swimming upside down and it tried to right itself but an hour later it washed into my margins dead. The one's I saw with my binoculars seemed to be around the 5lb mark and so hopefully the big girls will be OK.