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Discussion in 'Water Chemistry' started by David B. Diehl, Jan 21, 2017.
Found a way to lower ph by accident, apparently red lava rock will lower the ph of a tank.
I am not a water chemist or a rock expert.
Lava rock should be "Inert" and therefore it has no impact on your water parameters.
The common red rocks you buy at LFS could be Lava Rock.
Eheim were selling the same or a similar crushed rock as a filter media, its a great product as it does not alter the Ph.
Older and softer DW can lower the Ph but depends on the wood its self.
I have used it as a base in Terrascaping as it will not effect the Ph.
Is there any chance it is not a true Lava Rock but looks very similar to Lava Rock or something else has caused the Ph to lower?
Could it be your test kit?
It's the only change to the tank in a couple of weeks. Boiled the rocks first to kill off anything not wanted but that was it. Besides drilling a hole in one for a moss tree. Went from8.6 to 6.5 overnight.
I'm sure it's the rock, I remember science class where volcanoes also spew sulfur out at the same time
That is very strange as the Lava Rock just does not do that.
WARNING You could have easily killed your self off. Lava Rock has many air pockets and when over heated the rock can explode. All I have ever done was a good soaking then hose every thing off then leave in the sun for a few days.
Just brought it to boil then turned it off to cool overnight. Doing water change tomorrow, should bring levels back up.
Sump is working good now with addition of overflow box, have to add a gallon about every 4-5 days from evaporation.
That could be enough it only requires enough heat to expand the air.
I have heard a rock explode at a camp fire it was lucky no one was killed.
Why not do a small top up every day by doing that it will keep your water capacity up.
It's so the filter doesn't stop pumping, I'm going to make covers for it out of acrylic. Just easer this way. Do have lid for sump filter.
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