计算向RO/DI纯水中添加多少Seachem Equilibrium和小苏打才能达到目标GH和KH，适用于水草缸和虾缸。
RO (reverse osmosis) and DI water has near-zero minerals, which is too soft for most fish and plants. Fish need minerals (Ca, Mg, K) for proper osmoregulation, and plants need them for metabolic functions. Remineralizing lets you dial in exact GH and KH.
For most planted tanks: GH 4–8 °dGH, KH 3–5 °dKH. For soft-water fish (discus, cardinal tetra): GH 1–4, KH 1–3. For shrimp (neocaridina): GH 6–8, KH 2–4. For shrimp (caridina): GH 4–6, KH 0–2 (use different mineralizer).
Seachem Equilibrium raises GH (general hardness) by adding calcium, magnesium, and potassium — the minerals fish and plants need. It does not raise KH (carbonate hardness). Use it to target GH independently of KH.
Yes. Baking soda (sodium bicarbonate, NaHCO3) effectively raises KH. It adds a small amount of GH as a side effect. For shrimp tanks where sodium is a concern, use potassium bicarbonate (KHCO3) instead — the dose is similar.
Always pre-mix in a bucket of RO water first. Add Equilibrium and baking soda to the bucket, stir until dissolved, then add to the tank. Adding powder directly to a tank with fish can cause localized parameter spikes and stress fish.