need advice

[maddskillz]

is it ok just to pull out plants and replant them ?
i am putting white sand in.
is there anything i should know before i do this?

 

[Discomafia]

Remove fish?

Other than that, the only problem I forsee is all the gunk at the bottom when you remove it...

 

[Silly me]

I dont think you need advice, if your removing the undergravel filter it seems like you already got the right advice