Leather corals are workhorses of the soft-coral reef. Genera: Sarcophyton (toadstool, mushroom-shape), Sinularia (finger leather, branching), Lobophytum (stalked, thick-stemmed), Cladiella (colt coral - delicate fingers). Difficulty: beginner. Lighting: low to medium PAR (50-150). Flow: medium - they "shed" excess slime in low flow. Gentle current keeps them clean. Feeding: photosynthetic primarily; some target feed coral foods or amino acid weekly. Growth: aggressive - a 2-inch frag becomes a 12-inch toadstool in 1-2 years. Caveat: some species (especially toadstool Sarcophyton) release allelopathic toxins ("terpenes") that suppress SPS coral growth. Run carbon + heavy water flow to mitigate. Coloration: tan, green, "neon green," yellow morphs - higher-end colors $80-300 per frag.
Reviewed by the Fast Aquatics husbandry team · Updated May 2026
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Whatever specific topic brought you here, four fundamentals govern long-term aquarium success: water quality, parameter stability, biological filtration, and species-appropriate husbandry. Skip any one and the others struggle to compensate.
Water quality: ammonia + nitrite at zero, nitrate under 30 ppm freshwater + 10 ppm reef. Test weekly with API or Salifert kits. Use our water parameter checker to score your readings against your tank type.
Parameter stability: stable wrong parameters beat fluctuating ideal parameters. Most fish tolerate a wide pH range if it's stable. Sudden swings of 0.4+ pH or 5+°F kill fish faster than chronic suboptimal values. Use temperature controllers (Inkbird) + automated dosing for consistency.
Biological filtration: the bacterial colony on your filter media + rock + substrate is the engine. Never replace all media at once. Use our filter turnover calculator to size correctly.
Species-appropriate husbandry: research adult size, territoriality, diet, and tankmate compatibility before purchase. Use our tank stocking calculator + compatibility guides.
How long does an aquarium take to set up? 4-6 weeks for full cycling + first stocking. Use our cycle ETA calculator + how long does cycling take.
What's the best aquarium for beginners? 20-gallon long. Big enough for parameter stability, small enough for budget + space. See beginner picks.
How often should I do water changes? 25-30% weekly. See water change frequency Q&A + water change calculator.
Why does my fish keep dying? 5 leading causes: uncycled tank, wrong species pairings, no quarantine, undersized tank, neglected water-change schedule. See full diagnosis.
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