[WG.]

John - please follow the Help Topics link in my signature.  That contains piccie posting instructions.

[John]

Dieback of bottom leaves first - might be phosphorus locking up the magnesium. Try a foliar feed of 20g/litre of epsom salts.

There's more information on that in Elements of Plant Nutrition

[JohnB]

john do you have a photobucket album? your photos need to be on that or similar before you can post them here

THAKS THINK I HAVE MANAGED IT
This is the IMG thingy of my the photos of my ill tomatos please everyone give your opinion



and

[Selkie]

john i can't offer any help with your tomatoes (am sure someone else will come along in a minute and help you out) but well done for getting the photos up here!

[WG.]

I wonder if it isn't simply a cold draft down at floor level

[JohnB]

john i can't offer any help with your tomatoes (am sure someone else will come along in a minute and help you out) but well done for getting the photos up here!

Thank you for your help  JB

[John]

I wonder if it isn't simply a cold draft down at floor level

Possible but the look chloritic too me - quite pale... as in lack of chlorophyll due to deficiency. I refer the gentleman to my previous answers.

[JohnB]

I wonder if it isn't simply a cold draft down at floor level

Possible but the look chloritic too me - quite pale... as in lack of chlorophyll due to deficiency. I refer the gentleman to my previous answers.

No not the problem as other plants exactly the same and are higher up and not near any possible draughts.  Thanks JB

[JohnB]

IPossible but the look chloritic too me - quite pale... as in lack of chlorophyll due to deficiency. I refer the gentleman to my previous answers.

Still no they are a normal green the picture is not good (flash washed out picture a bit)

[gobs]

Very true, the upper leaves don't look green enough in the pictures.

Are these evening light conditions there? Is it frosted glass in the background, or just optical illusion?

Also look thin and leggy. Def lack of light, I think.

Bottom leaves look typical die back to me.

Most commonly cold or dry. Also great changes in temperature.

How damp is the soil? I assume you have the central heating on, you might want to keep the air moist somehow. Gotta think of them as indoor plants in winter.

Could we see other parts of plants, soil level, top and whole, please?

[Aunt Sally]

Looks as if it could be overnight cold air to me.  

Heat rises cold air falls.  With nothing in the conservatory to move the air about overnight the cold air could pool in the lower part of the space causing lower leaves to be chilled.

How do you heat the conservatory ? A blower or fan would stir the air overnight.

[JohnB]

Have a look at this ebay item (please) and tell me if this would help with growing in winter:-

 Ebay Link

[JohnB]

Looks as if it could be overnight cold air to me.  

Heat rises cold air falls.  With nothing in the conservatory to move the air about overnight the cold air could pool in the lower part of the space causing lower leaves to be chilled.

How do you heat the conservatory ? A blower or fan would stir the air overnight.

Use central heating but will use blower on low setting for a few days instead. Thanks     JB

[WG.]

In your original post, you said the heating comes on at night.  What is the day-time temperature like?   Try a thermometer in there at ground level (preferably a max/min thermometer).

[Aunt Sally]

Looks as if it could be overnight cold air to me.  

Heat rises cold air falls.  With nothing in the conservatory to move the air about overnight the cold air could pool in the lower part of the space causing lower leaves to be chilled.

How do you heat the conservatory ? A blower or fan would stir the air overnight.

Use central heating but will use blower on low setting for a few days instead. Thanks     JB

Most blowers have just a 'blow without heat' setting.  You'd be able to leave the central heating on then.