Regarding point 2 -- I suspect that it will be easier to deal with the pond when it is wet -- either full or drained -- than dry, or at least that's what I would try. I don't know how big it is.
What is the pond lined with? Basically you want some kind of dredge or other implement to get the weeds and also the sediment built up on the bottom of the pond out, because that sediment encourages the growth of weeds and algae, so anything that won't damage the pond liner will work. A shovel or trowel might work, depending on the size of the pond.
(I'm surprised the pond doesn't have a drain built in, honestly. Also, you live in Arizona -- can you just stop filling it and let it evaporate?)
Your local hardware store are likely to be helpful.
no subject
What is the pond lined with? Basically you want some kind of dredge or other implement to get the weeds and also the sediment built up on the bottom of the pond out, because that sediment encourages the growth of weeds and algae, so anything that won't damage the pond liner will work. A shovel or trowel might work, depending on the size of the pond.
(I'm surprised the pond doesn't have a drain built in, honestly. Also, you live in Arizona -- can you just stop filling it and let it evaporate?)
Your local hardware store are likely to be helpful.