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  1. The rule of thumb for pressure in relation to...

    The rule of thumb for pressure in relation to height is
    0.1 bar per metre, so a 2m deep pond has 0.2 bar pressure
    At the bottom. The external distances don't affect this.

    The quality of the...
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    40mm ball tap with delivery 7.99 ...

    40mm ball tap with delivery 7.99

    https://www.ebay.co.uk/itm/163900335504
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    Dave got in there first with recommending JTM....

    Dave got in there first with recommending JTM.
    you could use a foil bubble wrap around the 4"
    A couple of wraps would be good insulation, hold it with insulating tape or nylon tie straps.
    You...
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    I would be more bothered about the fluidity of...

    I would be more bothered about the fluidity of the solvent than a date.
    They do start to set in the tub, when it's going thicker it becomes impossible to work with quick enough.
    Especially is...
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    That will definitely test all your connections!

    That will definitely test all your connections!
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    You can get it on Ebay 20ppm for sterilising...

    You can get it on Ebay

    20ppm for sterilising equipment.
    That measure would kill anything!
    Pond treatment is usually 1.5ppm

    You will also need a gram scale to be able to accurately measure...
  7. Thread: Ph levels

    by Simon Fish
    Replies
    19
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    403

    You could test your kits accuracy by mixing some...

    You could test your kits accuracy by mixing some bicarbonate in a bucket of water, it will have a reading of 8.4 (or is it 8.3 something?)
    If the pond is 8.4 although that's on the high side it's...
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    The alternative to a bottom drain is a pump. But...

    The alternative to a bottom drain is a pump.
    But a bottom drain is better.

    You would be better giving the koi away and just having a few goldfish.
    500 would quickly be spent with very little...
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    Its essentially a 25 gallon cold water storage...

    Its essentially a 25 gallon cold water storage tank.
    There available with flat sides.
    If you reduce the pipe diameter you are still limited to the height being within one of the flat areas.
    ...
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    Is it the top of the Nexus that's 5' up from pond...

    Is it the top of the Nexus that's 5' up from pond bottom or the bottom of the nexus?
    If its top your only going down a foot to be level??
    If your talking about the bottom of the filter being 5' up...
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    Salt will lower the issue with nitrite, Not the...

    Salt will lower the issue with nitrite,
    Not the level but the toxic effect.

    Zeolite can help reduce the ammonia.
    Salt is used to recharge zeolite and release the caught ammonia, but a level of...
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    The spitting and hanging head down could be gill...

    The spitting and hanging head down could be gill flukes.
    But only more scraping can answer that.
    Try to get as close to the gills as practical.
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    ?? Most things die off and go brown. It's the...

    ?? Most things die off and go brown.
    It's the long wait till spring to find out.
  14. The picture is a tap adapter, BSP thread sizes....

    The picture is a tap adapter, BSP thread sizes.
    I don't think you would gain an inch maybe 1/2"or 3/4"
    That bit isn't going to be to much of a concern but better do it in plastic or some other way...
  15. Replies
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    Hi, sad news. How long has the pond been...

    Hi, sad news.

    How long has the pond been there?
    What's the Ph and Kh readings?

    Any other details with the fish, red rash, red fins, spitting food, excessive slime coat, bacterial infections?
  16. I like this idea. Is there a minimum/maximum flow...

    I like this idea. Is there a minimum/maximum flow speed for it to be effective? For the 80watt and the 40watt?

    The instructions for the amalgam uv show it fitted direct into a drum, sieve etc....
  17. Some pictures would help. From what you...

    Some pictures would help.
    From what you described there are 2 sets of filters with the first being gravity fed then pumped into the second. Have I understood that correctly?

    The concern that the...
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    As said a manifold, otherwise it's a lot of air...

    As said a manifold, otherwise it's a lot of air down one line.
    Anyway maybe this,
    https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.co.uk%2Fulk%2Fitm%2F153069848592
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    What volume is the holding tank? Would you be...

    What volume is the holding tank?
    Would you be able to set it up with the filters?
    If it went against the side of the house that would help.

    Forecast is warming right up by next monday, maybe...
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    790

    The distance of the flue to the boundary is what...

    The distance of the flue to the boundary is what matters.
    Usually 600mm but can vary depending on manufacturer and other factors.
    Get someone to have a look.
    Go on gas safe register, do a...
  21. Replies
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    790

    The danger with having electric connections at...

    The danger with having electric connections at different ends of the house is the temptation to take a power supply from what's closest. This then leave a danger when it comes to future work and...
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    790

    The plan names just relate to different ways of...

    The plan names just relate to different ways of configuring heating and hot water systems.
    So the S plan plus is 3, 2 port valves.
    A 2 port valve is very simple to work with and can be wired to...
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    790

    Dave as you already suggested it would need to...

    Dave as you already suggested it would need to go to a
    S plan plus. So a rejig at the airing cupboard.
    Rather than a 3 channel programmer that's not cheap, keep the existing programmer for the...
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    There are lots of variables as to system setup...

    There are lots of variables as to system setup and possible issues. You haven't given many details.

    Best get someone take a look, might seem there not doing much but experience means that with a...
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    The first bay needs to be only mechanical and...

    The first bay needs to be only mechanical and easy to flush out, with no air.
    Then start on the biological filtration.
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