Living Soil

Aquarium and fully submerged plants

Isoetes velata var. sicula: substrate and planted tank guide

Isoetes velata var. sicula is in Living Soil's Aquarium and fully submerged plants group. Plants growing entirely underwater in a tank: a thin layer of soil under a gravel cap, which is a different job from a pond basket. Its guide gathers what published references say about water pH, water hardness, temperature, light, planting bed, feeding, spotting problems, cautions and mixes, with 4 mixes that suit it.

What the isoetes velata var. sicula guide covers

Every item carries the reference behind it. Where references disagree, the guide shows both.

  • Water pH1
  • Water hardness1
  • Temperature2
  • Light1
  • Planting bed1
  • Feeding1
  • Spotting problems1
  • Cautions1
  • Mixes2

The count is how many sourced items each part of the guide holds.

Substrates that suit isoetes velata var. sicula

Aquarium soil layer for hard water

A published, referenced method for a soil bed under a planted tank. Once it is set up, the tank's fish keep the plants fed, and this version suits hard water best.

Aquarium soil layer for soft water

A published method for a soil bed under submerged plants, and it may well be the better pick for soft water. Once it is set up, the fish do the feeding.

2 mixes are made just for isoetes velata var. sicula, inside its guide.

Each mix comes with the reference behind every figure, measured for your batch, pots or bed.

Good to know

  • pH: the references give 6.6 to 6.6 for aquarium and fully submerged plants in general.
  • The mistake to avoid: Pushing houseplant fertilizer sticks or water lily tablets into the soil under submerged plants. Bacteria turn their sulfate into hydrogen sulfide, which can kill plant roots.
  • Also known as: quillwort, isoetes and isoetes velata

Questions

What is the best substrate for isoetes velata var. sicula?

Living Soil lists 4 mixes that suit isoetes velata var. sicula, each from a published reference. They include Aquarium soil layer for hard water and Aquarium soil layer for soft water. 2 are made just for it. The app measures any of them for your batch, pots or bed.

What pH does isoetes velata var. sicula need?

The references give pH 6.6 to 6.6 for aquarium and fully submerged plants in general.

Is the isoetes velata var. sicula guide free?

Its overview is free: what the guide covers and which mixes suit it. Opening the full guide takes credits, and the app shows the price before you confirm. Credits never expire.

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