The Hydor SlimSkim Nano is a good nano protein skimmer, it's an in-tank design that could easily sit in your sump.
1	The	the	DET	DT	Definite=Def|PronType=Art	4	det	4:det	_
2	Hydor	Hydor	PROPN	NNP	Number=Sing	4	compound	4:compound	_
3	SlimSkim	SlimSkim	PROPN	NNP	Number=Sing	4	compound	4:compound	_
4	Nano	Nano	PROPN	NNP	Number=Sing	10	nsubj	10:nsubj	_
5	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	10	cop	10:cop	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	10	det	10:det	_
7	good	good	ADJ	JJ	Degree=Pos	10	amod	10:amod	_
8	nano	nano	NOUN	NN	Number=Sing	9	compound	9:compound	_
9	protein	protein	NOUN	NN	Number=Sing	10	compound	10:compound	_
10	skimmer	skimmer	NOUN	NN	Number=Sing	0	root	0:root	SpaceAfter=No
11	,	,	PUNCT	,	_	10	punct	10:punct	_
12-13	it's	_	_	_	_	_	_	_	_
12	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	18	nsubj	18:nsubj	_
13	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	18	cop	18:cop	_
14	an	a	DET	DT	Definite=Ind|PronType=Art	18	det	18:det	_
15	in	in	ADP	IN	_	17	case	17:case	SpaceAfter=No
16	-	-	PUNCT	HYPH	_	17	punct	17:punct	SpaceAfter=No
17	tank	tank	NOUN	NN	Number=Sing	18	compound	18:compound	_
18	design	design	NOUN	NN	Number=Sing	10	parataxis	10:parataxis|22:nsubj	_
19	that	that	PRON	WDT	PronType=Rel	22	nsubj	18:ref	_
20	could	could	AUX	MD	VerbForm=Fin	22	aux	22:aux	_
21	easily	easily	ADV	RB	_	22	advmod	22:advmod	_
22	sit	sit	VERB	VB	VerbForm=Inf	18	acl:relcl	18:acl:relcl	_
23	in	in	ADP	IN	_	25	case	25:case	_
24	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	25	nmod:poss	25:nmod:poss	_
25	sump	sump	NOUN	NN	Number=Sing	22	obl	22:obl:in	SpaceAfter=No
26	.	.	PUNCT	.	_	10	punct	10:punct	_
