TDS jump due to clay pellets.
I have isolated the issue by testing the clay gravel separately. The tds jumps from 234 ppm to 850 ppm in 10 days. I am talking about burnt clay gravel. The lfs and others vouch for it especially for plants. Now the questions,
What was exactly is being leaches? Silicates, calcium? I would say there are no algae problems.
Is this a cause of worry? Should I acid wash the clay gravel.