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Hi Personally speaking I would avoid trying to utilise an old pc as a recorder, they can be unreliable & buggy and tend to cost more in the long run as you often need to upgrade memory/hard drive/video. You can purchase adequate 4 or 8 channel recorders with 1TB hard drives on online auction...

Only asking as I was having houseplant problems and after some research found it was down to long term use of houseplant fertilizer. Even with intermittent use, apparently there was a build up of chemicals in the soil and was advised that every 2 months I should run the whole pot under running...

Oh apologies to you JohnD. I'm sure the OP knew what we meant by salt as he used the term himself. I was only trying to give some advice that could save someones treasured plants, having suffered a plant annihilation myself when I was away for three weeks and mine were watered to death! Out of...

Sorry JohnD but you slightly misunderstand the terminology used. Salt is a very broad term for many different compounds and chemicals. Saleratus meaning 'aerated salt' is the old name for both sodium bicarbonate and potassium bicarbonate. So softened water does contain salt though not the sort...

Excellent question with mixed expert opinions. The salt in the softener does cause long term changes in the soil chemistry. The soil acts as a buffer for the ions in the water however over time the soil can lose it's 'buffer' ability. It is a similar to the long term effects of acid rain, which...

Thanks oasistechnical, the correct advice really but still would prefer the DIY route 1st as far cheaper & more fun (if it works)! scott1980 - I like the sound of your suggestion, I have plenty of Dantech 12V power supplies and some IP rated exterior boxes, the roller shutter contacts don't...

Hi I would like to alarm two gates at the rear of a property. They are used throughout the day for access but it is important that at least one gate remains closed if the other is open. I was thinking of using door contacts on both of the gates that could alert indoor sounders should both be...