My whole tank is crashing!!!!! (Pics Included)

[AZBigJohn]

Deep breath, re-read Sk8tr's post, and fill a 5 gallon buck, or pull your sump offline and fill it with fresh salt water and pull everything that is alive and healthy out like she suggests...

Or, if the destruction is not that widespread, do a massive (think 50%) water change and pull as much dead stuff out as possible to reduce the amount of the ammonia spike you may have...

 

[animalkingdom]

last thing ill say because i dont want to stir the pot
The pH comment was in regards to the chemiclean treatment not the addition of water. You are correct adding water will not affect pH much as pH is a measure of hydrogen ion concentration and is equal to the negative log base 10 of the hyrogen ion concentration. Therefore even a 50% water change with distilled water will have little affect. Sorry just wanted to clarify as you mentioned a change in pH was a dumb comment, but did you keep an eye on it during the treatment? It very likely changed for a variety of reasons including, changes in aeration, respiration, photosynthesis, and other processes. Ask someone with a continuous running pH probe who treated their tank with chemiclean.