this is the total number of war assets from the Salarians:
125 from saving the Salarian councilor in me1
35 for letting Kirahee die and talking to Lt. Tolen at the STG base in me3
25 from Mordin if you persuade him that curing the genophage is a bad
idea with Wreav in charge and Eve dead
150 from sabotaging the cure and
8 from a Salarian side mission
You also get the Krogan too with this
25 from Wreav
25 from Grunt if he survived me2 and his loyalty mission was completed
50 from Arlak company
50 from n7 Cerberus attack
345 from Krogan clans and also speaking with Diana Allers
40 from Krogan side mission
300 Clan Urdnot
Add them together and you get a total war asset amount of 1138.
When you cure the genophage and lose the extra Salarian support, you get 875+169 which equals to 1044.
So kill Wrex and destroy Maelon's data. All it will do is change dialog, nothing bad.