Sump is doing well. Thanks, I put a piece of plexiglass to divide it from the actual pumps. The skimmer flows over into it causing it to flow over into the sump. Seems to be working well!
I used this concoction one time when I had low alk., and it worked for me.
Take a box of baking soda and split it up in two piles, 6 to 1.
Bake the smaller pile in an oven for 30 mins. @450 degrees F(Julia Childs would be proud) I'm not sure how, but this turns the sodium bicarbonate to sodium carbonate.
Mix the two piles and whamo, you've got alk.
Dose 1 tsp. per day until your alk. is where it needs to be.
Disclaimer:
I would only do this if a few small water changes did not do the trick. Also, I only added 5 tsp. to my system, so I can't say what prolonged, or repeated use of this mixture will do.
Side effects may include:
Head aches
Rickets
Tennis elbow
Hair loss
Impotence
Constipation
Narcolepsy, and
Mad cow disease