Spring Aquascape Refresh: A Trimming and Replanting Checklist

Spring is a natural point to take stock of a planted tank. Longer daylight hours outside can nudge your lighting schedule, and after a few months of steady growth, most tanks have overgrown sections, leggy stems, and gaps worth revisiting.

Reassess Your Lighting

If your lights are on a timer tied to natural cues, or if you've been running them longer through winter to compensate for a darker room, spring is a good time to dial the schedule back to a consistent 6-8 hours. More light isn't always better — it just means faster growth and more algae risk if nutrients aren't keeping pace.

Trim and Replant Overgrown Stems

Fast growers like Rotala, Ludwigia, and Hygrophila often get leggy and thin at the base over a few months. Cut healthy tops and replant them densely, discarding the bare lower stems rather than trying to revive them. This is also the easiest time to multiply a section you want more of — see our Ludwigia Care Guide for propagation details.

Check Your Carpet

Carpeting plants like Dwarf Sagittaria or Staurogyne can develop bald patches or start climbing over each other after months of unchecked spreading. Thin dense areas and replant runners into thin spots to even things back out — our Dwarf Sagittaria Care Guide covers runner propagation in more detail.

Refresh Root Feeders

Heavy root feeders like Amazon Sword and Vallisneria deplete root tabs over time, and a spring refresh is a good moment to add new ones near established crowns rather than waiting for yellowing leaves to signal a problem.

A Good Starting Point

If your background has thinned out over winter, Vallisneria Gigantea is an easy way to fill gaps back in — it roots fast and starts sending out new runners within a few weeks.

Keep Reading

• The Ludwigia Care Guide
• The Dwarf Sagittaria Care Guide