Removing eSHa Medication After Treatment

Colour does not measure treatment success or clearance

Water colour alone cannot tell you whether a medicine worked, whether enough active ingredient remains or whether all residues have been removed. The old promises of 90% colour clearance in 24 hours and guaranteed readiness after a fixed carbon interval were not established by evidence here.

Work out what a water change removes

Assuming thorough mixing and replacement with water containing none of the substance, a 40% change leaves 60% of what was present just before the change. Two such changes leave 0.6 × 0.6 = 36%. A 50% change leaves half, rather than removing every trace.

Real medication concentrations also depend on breakdown and other losses, so these dilution calculations do not specify a safe switching interval or a replacement dose. Follow each product’s directions if water must be changed during treatment.

Carbon, resins and UV have different roles

eSHa describes fresh activated carbon and water changes in its treatment-removal guidance. Use the specific instructions rather than assuming any adsorbing resin is an equivalent substitute. The former claim that Purigen reliably removes every medication has been removed.

Do not turn chemical filtration back on during an active course merely to clear a tint. Keep ordinary filtration running as instructed, and use the product’s equipment guidance to decide when UV or skimming can restart. We have removed the unsupported claim that UV “sets” dye permanently in silicone.

Before starting another product

• Write down everything already added and when.
• Check both products’ compatibility and removal instructions.
• Record water changes and any filtration used.
• Ask the manufacturer to clarify uncertain residues or conflicting directions.

Also check that the next medicine treats the suspected problem. The previous example recommending ndx for tapeworms was wrong: ndx targets nematodes. See the parasite-target comparison.

Sources

• gdex instructions and removal guidance
• EXIT instructions and extensions
• ndx instructions
• Combination checks