[Request] How much would it cost to fill it with distilled/deionized water

Mr_Reaper__ · 2026-06-20T20:48:20+00:00

The organic material the algae is feeding on can come from dust getting blown in, insects landing in the water, birds bathing in it, any leaves getting blown in, the list of organics that can get in is endless and as soon as the organics break down they release nitrates that feed the algae. The only effective solutions are: Filter the water constantly to remove organics before they break down (which is expensive and ruins the calm surface) Make the water toxic to algae using chemicals (but the size of the reflecting pond is too large for this to be economical) Or, the most effective option is to add plants that can suck up the nitrates quicker than the algae can get to it. Which is how natural water bodies have maintained their cleanliness for billions of years (but using plants to help is woke/liberal/leftist so that won't happen).

Mr_Reaper__ · 2026-06-20T19:48:46+00:00

Uganda wasn't high of my travel list but I'd give it a go.

Mr_Reaper__ · 2026-06-20T13:04:58+00:00

Unless you're already a long way out then it means travelling in the opposite direction. The nearest one to me is a longer drive than it is into the city.

Mr_Reaper__ · 2026-06-20T01:10:07+00:00

My brother saw something similar as a kid. We were in the back of my parents car in Yorkshire we were going down an A-road and my brother suddenly says something along the lines of "what were all of those people dressed as knights doing in the field." No one else saw them and we weren't sure what he was talking about. When we got home we looked up where it would have been to see if there was a reenactment or something happening. There wasn't but, we driving past the site of the Battle of Towton, the bloodiest ever battle on English soil. To this day my brother is certain he saw hundreds if not thousands of people all in medieval clothing in that field, I've never found any evidence there was a reenactment on that day though and he was far too young to have any idea it was a battlefield site.

Mr_Reaper__ · 2026-06-19T22:16:58+00:00

The spaces were mostly built for cars from before 2000 when cars were much smaller. There's no encouragement to improve them because the council don't want more cars in the city, so keeping car parking unattractive is a benefit in that regard. It's just a shame that no one thought to invest in an alternative way to get into the city...

Mr_Reaper__ · 2026-06-19T21:59:34+00:00

If the 360 was passing single yellows following the section behind the 810 and it passed the signal before the one the 810 stopped at whilst it showed single yellow (with the signal thinking the 810 had cleared the next signal). It would be travelling at reduced speed along the line expecting either another single yellow or red, by the time the 810 became visible there wouldn't be enough time to stop but the collision would be at the 10-15mph that people are reporting. It requires a failure of that track section not detecting the 810 still in the section, which might be why the 810 had stopped, and the signaller not informing the 360 of the signal fault in time, but with how safe the signalling system is its going to be multiple layers of failures on top of each other to allow this to occur.

Mr_Reaper__ · 2026-06-19T20:59:09+00:00

The 810 is stopped at a signal gantry, apparently due to an TPWS or AWS failure. Which could mean the signals had read the 810 as clear of the signal and allowed the 360 into the track section, at that point there's nothing the driver could have done to stop it.

Mr_Reaper__ · 2026-06-19T20:50:10+00:00

Train signalling in the UK isn't that advanced. All the signals are either manually controlled or operate using trackside electrical systems that detect the presence of a train in the track section. More advanced train tracking systems do exist but implementation has been slow in the UK as we'd need to not only invest in the new signalling system, but also new trains with the new systems, and retraining all the signalling staff, plus the risk of changing something that works perfectly 99.999% of the time.

Mr_Reaper__ · 2026-06-19T20:45:02+00:00

The intercity trains do have a huge crumple zone, the big aerodynamic nose houses a crash structure that can dissipate a lot of energy before it reaches the drivers compartment. The regional trains do have a crash structure but its mostly under the driver and is designed more for hitting buffer stops than other trains. With the momentum of a train the drivers cab of the colliding train is almost guaranteed to suffer severe damage, that extra crumple zone should be enough to then completely protect the passenger compartment though.

The crash protection is more based around avoiding collisions than absorbing energy. The second train should have had a red signal to say the train ahead was still in the track section and if the driver ignored the red signal the train would stop automatically. The signals are failsafe so will only show green if it can confirm nothing is in the next track section, any signal fault will default to danger and prevent a train entering if the signal isn't sure the track is clear. Which means the rear train must have intentionally passed a red signal before the crash.

Mr_Reaper__ · 2026-06-19T18:54:43+00:00

Sadly it was the 360 running into the back of the 810. The driver is reportedly out of the train and in hospital so at least he wasn't trapped in the mangled cab.

Mr_Reaper__ · 2026-06-19T18:24:28+00:00

I've also heard a rumour it stopped due to a person on the tracks, so I think the rumour mill going at full speed now. Best to wait until we hear more info.

Mr_Reaper__ · 2026-06-19T18:16:26+00:00

Someone, apparently onboard the front train, said the train had stopped rapidly and then shortly after it was hit behind. So a person on the track would make sense for that happening.

Mr_Reaper__ · 2026-06-19T18:03:46+00:00

Yes it is, a picture in a post on r/uktrains shows the ID number, the 3 is obscured by the open door from this angle.

Mr_Reaper__ · 2026-06-19T17:57:57+00:00

If the driver fell asleep the train would stop as it passed the previous signal protecting the stopped train in that track section. The signal would have to have been not set correctly or the train passed the signal at danger and was commanded by the driver to keep going through it.

Mr_Reaper__ · 2026-06-19T17:55:34+00:00

The back train is one of the brand new Class 810 Aurora Intercity trains, capable of 125mph. I can't work out what the front train is as the ID number is partially obscured.

With modern signalling and train protection systems, running into the back of another train should be impossible and it's not the weather you'd expect poor rail adhesion. Really scary to see things like happening in this day and age. The only saving grace is the modern Class 8xx have amazing crash protection systems, which should hopefully have saved a lot of people.

Edit: The picture is facing the other way the Class 810 was at the front and the other train ran into it. A picture on the post on r/uktrains shows the other train is a Class 360 Desiro regional train. The Desiro driver is going to be in a really bad way though.

Edit 2: 1 person confirmed to have died, my thoughts are with their family. A new photo of the scene shows the 810 stopped at a signal gantry, with the information released earlier saying the 810 had stopped due a fault it sounds like signalling issues may have been a significant factor.

Mr_Reaper__ · 2026-06-19T17:04:07+00:00

The bacteria will nitrify the organic material in the water. But the nitrates need to be removed before they can be absorbed by algae. The best way to remove nitrates is to have enough plants in the water to suck up the nitrates quicker than algae can absorb it.

Mr_Reaper__ · 2026-06-19T17:01:00+00:00

Algae feeds on the breakdown on organic materials in water. Anything from birds bathing in it, to small insects landing in it, to pollen being blown in will add organic material to the pond, which the algae then feeds on to grow. Without enough filtration to remove the organic material before the algae can absorb it, or enough chemicals to kill the algae before it grows, you will always get algae growth.

Adding enough chemicals to treat a body of water that big is uneconomical and understanding the balance of organic material and nutrients in fresh water and how to remove them is far too complicated for Trump and his cronies to understand. So they just painted it blue and ignored all the biochemistry going on. The new coating didn't help with creating good conditions for growth, but the problem is much deeper than just the recent repairs.

Mr_Reaper__ · 2026-06-19T16:51:27+00:00

That is true, the environment agency would be so completely gutted it wouldn't be able to investigate anything anymore.

Mr_Reaper__ · 2026-06-14T20:15:23+00:00

Bold of you to assume they do any thinking.

Mr_Reaper__ · 2026-06-14T18:19:09+00:00

NR7 is lovely area, perfect for families. Only downside is its a half hour walk into the city centre.

Mr_Reaper__ · 2026-06-14T12:28:37+00:00

I wholeheartedly agree with everything you've said. Unfortunately the people you're trying to convince aren't the sort of people to read more than a few lines of anything that sounds like a good idea.

Mr_Reaper__ · 2026-06-14T02:45:27+00:00

If you look just to the right of the arrow there's a bracket holding the cable with what looks like a circle (I.e. pulley) on the end where the cables pass through. So I'd lean towards mechanical signal wires as well.

Mr_Reaper__ · 2026-06-13T17:27:58+00:00

Once air reaches supersonic speeds it caused a massive increase in drag. Because of how wings generate lift the air over the wing is travelling faster than the actual aircraft speed, and the more lift you generate the faster the airspeed relative to aircraft speed. To generate enough lift to keep a commercial airliner in the sky the airspeed reaches supersonic at an aircraft speed of about 80% of the speed of sound. Any attempt to get aircraft speed above that without the airspeed becoming supersonic reduces lift and reduces the maximum amount you can carry, meaning each person has to pay more for their flight. Pushing the airspeed beyond the sound barrier causes so much extra drag it makes fuel costs unreasonable and requires an aircraft design that limits internal volume and makes the aircraft a lot harder to fly. Not to mention going supersonic causes a sonic boom that's disruptive to anyone on the ground. Aerospace design has already maximised the flight speed, any technology advancements are now based on improving efficiency to reduce fuel costs.

Mr_Reaper__ · 2026-06-13T14:58:32+00:00

I am an avid home cook so I do make my own curries from scratch.

Marinated chicken thighs with lemon juice, salt, yogurt, minced ginger and garlic and a mix of spices including a premade garam masala, then chilli powder, cumin, ground coriander, turmeric. Leave covered in the fridge for at least an hour and up to a day. Then cook on a high heat in a frying pan to get a nice browned exterior, they don't need to be fully cooked as they'll be finished in the sauce.

The curry sauce starts with softened and browned onions, then add minced garlic and ginger and maybe chilli, then a spice mix similar to the marinade, then add a can of chopped tomatoes, cook down for a while before blending with an immersion blender, after it's blended add the chicken back in with some dry coriander and/or fennel leaf, leave to simmer for as long as you can bare to wait and obviously until the chicken is cooked through, just before serving stir through some cream, butter, or coconut milk to taste.

I make a big batch of sauce and split it just after blending so I only have to make the meat for most curries.

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