Dear Koylenna,
So sorry to hear about your loss. I can't begin to imagine the heart ache you've been thru'.
Without wanting to brush over loss, I can offer you some good news and encouragement with regard to your late HUsband's Pond and Koi Carp. As "Anubsiram" (can't remember your christian name mate

) says, there are plenty of NWKS members willing to help and offer advice.
Here's what to do:
1. Phone either myself or Dave S Wilson to give us your address and contact details (see Contact us - on main web pages)
2. or send me a PM (Private message) by clicking the PM button next to my name, and include your phone number etc. By all means PM Dave or Anubisram too.
Please DON'T post your contact details on the open Bulletin board.
One or more of use will do our utmost to get over to you ASAP and assess your pond's situation, and then advise. I'm confident that we'll not only be able to help, but also ensure that you can continue to keep Koi safely and with minimal effort, maximum enjoyement.
Best Regards
Martin