Any last minute advise?
Make sure you noticed my change in dosage down to 2 tbsp. 3% H2O2 per 10G, which increases the safety margin for fish in a wider variety of circumstances. It still seems effective enough against algae, according to a few reports I've gotten in the thread and PMs using the new dosage.
After seeing the reports regarding shrimp here, I was thinking about reducing the Excel as well. But given the hit-and-miss nature of these reports, as well as some discussion on the shrimp forum, I don't think any whole tank algae treatment can be 100% shrimp safe; regardless of dosage. Use only if you are willing to risk the Amanos
, as the result will be essentially unpredictable.
Finally, always keep an eye on your livestock - during this or any other treatment. If you see any disturbing behavior, terminate the treatment and perform a 50% water change immediately to reduce chemical levels. Reduce CO2 (if present) and provide extra oxygenation for the next 24 hours. This will greatly alleviate stress.
Whatever you decide, let me know!