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Thread: Water clarity
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14-08-2020, 12:52 PM #21Hobby and business gone but when you’re hooked you’re hooked.
Always happy to help!!
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Frimley Koi keeper, freddyboy Thanked / Liked this Post
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14-08-2020, 12:54 PM #22
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freddyboy Thanked / Liked this Post
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14-08-2020, 01:12 PM #23
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Frimley Koi keeper, freddyboy Thanked / Liked this Post
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14-08-2020, 01:37 PM #24
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14-08-2020, 02:06 PM #25
Did the OP solve their problem?
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freddyboy Thanked / Liked this Post
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14-08-2020, 02:32 PM #26
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freddyboy Thanked / Liked this Post
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14-08-2020, 06:22 PM #27
What size pond is it please, I might have to bite the bullet and give it a go
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14-08-2020, 07:46 PM #28
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freddyboy Thanked / Liked this Post
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15-08-2020, 10:21 AM #29
Hi all, sorry to butt in ,I seen amalgam uvs mentioned and was wondering what the benefits of these are over the standard uv lights..
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15-08-2020, 10:39 AM #30
I could be wrong on this but the Amalgam ones are designed to go into things like drums or bio chambers as they are basically just the quartz tube and lamp plus control gear of course where as a standard UVC is designed to be dry mounted as it has a covering on it to stop you seeing the harmful to the eyes UV radiation.
Well that's how I understand it without going into too much technical detail
I'm sure Nick UK will have a more accurate indepth answer for you
The Amalgam UVCs if fitted in a drum or bio chamber etc which is accessable should have some kind of safety device fitted to it so the lid can't be removed without turning off the UVC.
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freddyboy Thanked / Liked this Post
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15-08-2020, 10:47 AM #31
Just livened up the UVC in the filter for the skimmer line this morning. What a pain in the arse. I bought the filter years ago but only fitted it a few months back but didn't bother using the UVC on it. I fitted a plug on the flex and plugged it in and nothing happened! When back and checked the fuse in the plug etc then stuck a tester on the UV tube. 1 side was good and the other side was blown. It was a new tube supplied with the filter and was faulty from new. Fortunately I had ordered a spare for my main UVC from ELC which arrived yesterday, fitted the new tube, checked UVC and it worked.
Just got to see if it makes any difference to the water clarity but it will probably be next weekend before I will see the result.
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freddyboy Thanked / Liked this Post
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15-08-2020, 11:39 AM #32
UV is dangerous to eyesight and should NEVER be looked into. I cover mine in the sieves and turn off before removing lids.
Cheers
GazHobby and business gone but when you’re hooked you’re hooked.
Always happy to help!!
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freddyboy Thanked / Liked this Post
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15-08-2020, 12:06 PM #33
Gawd damn it. Got a reputation now.
Amalgam and others are UV tubes (slightly more effective wavelength) and basically the same technology. All the tubes put out UV light that break down the DNA in the cells. So not good for your eyes or skin if exposed. Quite shocking when I see people's videos just nonchalantly looking at them - would you do that in a nuclear reactor? No.. pretty much the same thing - different wave length..
It's the same UV 'C' that causes skin cancer and sun blindness. <-- is this enough for people to take it seriously?
You need a certain energy level to do the damage - distance for a certain time from the tube is key so the UVCs of old kept the water piped through them close enough to give a maximum lethal exposure. The down side is that this causes a constriction in flow - so putting it in the drum (a) kills stuff, (b) doesn't constrain all the flow - not all will be fully treated, and (c) exposing the biofilm kills off the film build up on the drum mesh. Down side is that plastics are not UV stable (even with stabilisers in) so you could end up with brittle plastic components within the drum. If you have a metal RDF.. then you're sorted
You MUST have a switch to disable the UV when the lid is open.
In terms of difference between Amalgam and other UV - a small difference in wave length, closer to the optimal point for sterilisation. However an article on Amalgam claims by some UV professionals really debunked most of the claims. A bit more efficient but not the wild claims of 5x for example. Most of the pond benefits are in the use to get away from constrains in flow rates - if the rate is too high the water simply goes past unlike the old UVC tubes where you'd end up putting in bypass tubes with valves anyway..
An alternative to UV is Ozone (O3) gas. Which is used to sterilise but is also toxic to humans. Ozone can be produced by UV tubes too, so some Ozone systems combine UV and Ozone. To make it really effetely, use it in a counter flow protein skimmer - just ensure that the skimmer O3 and waste foam trapped O3 is vented externally and not in your filter house.14000l, my mutts: Chargoi (2010), Doitsu (2022), Tancho (2022), Kujaku (2022), Hi Utusri (2022)
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15-08-2020, 12:08 PM #34
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freddyboy Thanked / Liked this Post
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15-08-2020, 12:13 PM #35
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15-08-2020, 12:20 PM #36
my UV 30W is connected to the waterfall on 4000 pump and the water is crystal clear, but then again my pond is small, 1500 gallons.
Human life is truly a short affair. It is better to live doing the things that you like Inazo Nitobe
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freddyboy Thanked / Liked this Post
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15-08-2020, 12:20 PM #37
You may find that if a drum or bio chamber will have a limit switch connected to the lid. More so if it's built with a UVC as part of it's original design. So you can't have access to the lit UV tube unless you are really trying as in use something to hold the limit switch shut once the lid is opened. Not a recommended option due to reasons already mentioned by Nick.
Is it just Nick, Dr Nick or Professor Nick? Sorry I am not trying to be funny just asking as you seem very knowledgeable Nick
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freddyboy, SamuraiJack Thanked / Liked this Post
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15-08-2020, 12:44 PM #38
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Frimley Koi keeper, SamuraiJack Thanked / Liked this Post
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15-08-2020, 12:46 PM #39
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Frimley Koi keeper, SamuraiJack Thanked / Liked this Post
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15-08-2020, 12:50 PM #40
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freddyboy Thanked / Liked this Post
Best plants to remove Nitrate
pug has a very impressive veg filter on his pond, have a look at some of his his youtube videos....