Algae tank

Production Northern lights farm Festive farm

A small, cheap and fast building that keeps the by-products from your orchards from going to waste.

Quick overview

Farm	Northern lights farm, Festive farm
Category	Production
Size	6 × 5
Max level	4
Price	30 000 Snow dollars
Build time	20 min
Workers	3
Priority	Build early

What it's for

Plant debris is made into algae in the algae tank. Algae increase the production of the winter fields you use them on.

The kelp tank processes plant remains into kelp, which then boosts the productivity of your winter fields. It stands on the Northern lights farm as well as the Festive farm and, at 6x5, it's smaller than most other processing buildings. The plant remains it works with come as a by-product from the tree grove, the berry orchard and the sheep pasture, so the kelp tank closes the loop on the waste from your orchards. It's meant for players who want to squeeze more out of their winter fields than they give without support.

When to build it

The kelp tank makes sense to build once you have at least one orchard or pasture running that produces plant remains, otherwise you have nothing to process. Given that it eats a fairly large amount of material, 240 per batch, while being cheap and quick to build, it's one of the first buildings worth having on the Northern lights farm. One is enough, because after a few upgrades it can handle the plant remains coming in from several orchards at once.

Is it worth upgrading

Upgrading has a clear effect on speed here, with production time dropping from 4 hours at level 1 to just 1 hour at max level for the same 240 plant remains. The worker count only rises mildly, from 3 to 9, so the running costs aren't as steep as with other buildings on the same farm.

Tip from a veteran player Plant remains come in from several sources at once, so the kelp tank often can't keep up - feel free to upgrade it before you worry about upgrading the orchards themselves.

Most common mistake Players often underrate the kelp tank and leave it at level 1, even though plant remains from several orchards are sitting around waiting to be processed.

Building levels

Level	Price	Build time	Workers	From level
1	30 000 Snow dollars	20 min	3	—
2	150 000 Snow dollars	50 min	5	—
3	850 000 Snow dollars	2 h	7	—
4	2 500 000 Snow dollars	3 h 40 min	9	—

Production at level 1

Output	Ingredients	Time	Cost	XP
60779 × 1	Plant debris × 240	4 h	21 600 Snow dollars	—

Game data, version 8052 (14. 8. 2026).

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