water chemistry

I can't express the anger I am in right now....the people at my lfs basically told me to leave my tank for 3 weeks before adding fish with live rock. They told me absolutely nothing about the Nitrogen Cycle. After reading more and more on these forums I have learned about the Nitrogen Cycle and...

Abstract: A calculation error led to the overdosing of tri sodium phosphate (TSP: Na3PO4) to a 700L (135 gallon display plumbed to two 25 gallon frag tanks) mixed reef system with deep sand bed that has been operating for the past 14 years. The overdose resulted in not the targeted 0.010 ppm...

Approx. 1.5 years back: No3 level was off the range ... super RED; from memory, it's above 120 ppm :mad: After adding some Siporax media in my sump and NoPox dosing for considerable amount of time, the No3 level has dropped to undetected level (0 ppm). :D Approx. 6 months back: Stopped dosing...

Water Chemistry Question: When water evaporates our tank, salt remains, that's why the higher concentration of salt and less water, hence the SG rise. Does this happen with Ca, Alk & Mg when water evaporates? Do these elements stay in the water? Normally we pour some water in to bring the SG...