Description
APT Sky by The 2Hr Aquarist
Precision GH Booster • Shrimp‑Safe • Ultra‑Fine Powder
Why APT Sky Outperforms Other Brands
| Feature | APT Sky | Typical Competitors |
|---|---|---|
| Powder texture | Ultra‑fine, non‑clumping | Coarser, residue‑prone |
| Concentration | ~3× stronger per dose | Often diluted, requiring more |
| GH adjustment | Precise +2.5 dGH per 3.5 g per 60 L | Variable, often less predictable |
| Parameter neutrality | No change to KH, pH, NPK | Often raises KH or pH unintentionally |
| TDS output | Lower per GH increment | TDS spikes higher for same effect |










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