Going round in circles trying to choose a water lily

Can someone help me before I tear all my hair out! I'm looking for a water lily with yellow flowers for my new pond, approx 2 feet deep, 3ft wide and 5ft long (it's an irregular shape so hard to work out exact surface area).

I used to have a lovely mexicana but I can't seem to find one anywhere now.

I've looked at helvola but will that be *too* small? The information on others varies wildly from 'suitable for a small pond' to 'needs to be in a lake' so I have no idea what to believe.

I have pots and aquatic compost so can easily order a bare root plant online.

Can anyone recommend a variety please?

 

Hi I grow this in a tub , does really well and flowers its heart out

I am taking photos this morning so I will add one to this post later so you can see for yourself I was thinking of having a small pond and bought this to grow on.
Chromatella


Spruce

 

http://www.watersidenursery.co.uk/I...nd waterlily - NYMPHAEA MARLIACEA CHROMATELLA

hope the link works or copy and paste into address bar.
up to 36 inch spread and hardy looks nice.

 

Thank you, that one looks lovely!

 

http://www.ebay.co.uk/itm/Marliacea...Lily-Lilies-UK-Hardy-Pond-Plant-/221204773313


found the cheapest as well plus free P&P

 

Wonderful, thank you so much!